Manuale d’uso / di manutenzione del prodotto TMS380C26 del fabbricante Texas Instruments
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TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Copyright 1993, T exas Instruments Incorporated 1 • IEEE 802.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 2 pinout The pin assignments for TMS380C26 (132-pin quad flat-pack) are shown in Figure 1.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 3 description The TMS380C26 is a single-chip network communications processor (commprocessor) that supports token ring, or Ethernet Local Area Networks (LANs).
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 4 block diagram and signal descriptions TMS380C26 has a bus interface to the host system, a bus interface to local memory , and an interface to the physical layer circuitry .
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 5 T erminal Functions PIN NAME NO. I/O DESCRIPTION BTSTRP 23 IN Bootstrap. The value on this pin is loaded into the BOOT bit of the SIF ACL register at reset (i.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 6 T erminal Functions (continued) PIN NAME NO. I/O DESCRIPTION MAXPH 130 I/O Local Memory Extended Address and Parity High Byte.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 7 T erminal Functions (continued) PIN NAME NO. I/O DESCRIPTION MOE 11 8 OUT Memory Output Enable. This signal is used to enable the outputs of the DRAM memory during a read cycle.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 8 T erminal Functions (continued) PIN NAME NO. I/O DESCRIPTION PRTYEN 22 IN Parity Enable. The value on this pin is loaded into the PEN bit of the SIF ACL register at reset (i.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 9 T erminal Functions (continued) System Interface – Intel Mode (SI/M =H ) PIN NAME NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 10 T erminal Functions (continued) System Interface – Intel Mode (SI/M =H ) PIN NAME NO. I/O DESCRIPTION SDDIR 38 OUT System Data Direction.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 11 T erminal Functions (continued) System Interface – Intel Mode (SI/M =H ) PIN NAME NO. I/O DESCRIPTION SRAS /SAS 39 I/O System Memory Address Strobe (see Note 3).
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 12 T erminal Functions (continued) System Interface – Intel Mode (SI/M =H ) PIN NAME NO. I/O DESCRIPTION SYNCIN 108 IN Reserved.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 13 T erminal Functions (continued) System Interface – Motorola Mode (SI/M =L ) PIN NAME NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 14 T erminal Functions (continued) System Interface – Motorola Mode (SI/M =L ) PIN NAME NO. I/O DESCRIPTION SDDIR 38 OUT System Data Direction.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 15 T erminal Functions (continued) System Interface – Motorola Mode (SI/M =L ) PIN NAME NO. I/O DESCRIPTION SRD/ SUDS 61 I/O Upper Data Strobe (see Note 3).
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 16 T erminal Functions (continued) Network Media Interface – T oken-Ring Mode (TEST1 = H, TEST2 = H) PIN NAME NO. I/O DESCRIPTION DRVR DRVR 89 88 OUT Differential Driver Data Output.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 17 T erminal Functions (continued) Network Media Interface – Ethernet Mode (TEST1 = L, TEST2 = H) PIN NAME NO. I/O DESCRIPTION DRVR DRVR 89 88 OUT These pins have no Ethernet function.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 18 T erminal Functions (continued) PIN NAME NO. I/O DESCRIPTION TEST 0 TEST 1 TEST 2 79 78 77 IN IN IN Network Select inputs.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 19 T erminal Functions (continued) PIN NAME NO. I/O DESCRIPTION V SSL 17 83 IN Ground reference for digital logic. All V SS pins must be attached to the common system ground plane.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 20 architecture The major blocks of the TMS380C26 include the Communicat.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 21 On every cycle the system interface compares all the system clocks to a reference clock. If any of the clocks become invalid, the TMS380C26 enters the slow clock mode, which prevents latchup of the TMS380C26.
NOTE: The Adapter-Internal Pointers T able is defined only after TMS380C26 initialization and until the OPEN command is issued. These pointers are defined by the TMS380C26 software (microcode), and this table describes the release 1.00 and 2.x software.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 23 Adapter-Internal Pointers for T oken-Ring † ADDRESS DESCRIPTION >00.FFF8 ‡ Pointer to software raw microcode level in chapter 0.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 24 Adapter-Internal Pointers for Ethernet † ADDRESS DESCRIPTION >00.FFF8 ‡ Software raw microcode level in chapter 0.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 25 User-Access Hardware Registers 808x 16-Bit Mode: (SI/M = 1, S8/SHAL T.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 26 SIF Adapter Control Register (SIF ACL) The SIF ACL register allows the host processor to control and to some extent reconfigure the TMS380C26 under software control.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 27 Bit 6: SWHRQ — Current SHRQ Signal V alue This bit contains the current value on the SHRQ/SBRQ pin when in Intel mode, and the inverse of the SHRQ/SBRQ pin when in Motorola mode.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 28 Bit 12: SINTEN — System-Interrupt Enable This bit allows the host processor to enable or disable system interrupt requests from the TMS380C26.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 29 SIF ACL Control for Pseudo-DMA Operation Pseudo-DMA is software controlled by the use of five bits in the SIF ACL register .
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 30 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) † Supply voltage range, V DD (see Note 6) 7 V .
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 31 P ARAMETER MEASUREMENT INFORMA TION Outputs are driven to a minimum high-logic level of 2.4 volts and to a maximum low-logic level of 0.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 32 P ARAMETER MEASUREMENT INFORMA TION OSCIN OSCOUT MBCLK1 † MBCLK2 .
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 33 P ARAMETER MEASUREMENT INFORMA TION timing parameters The timing parameters for all the pins of TMS380C26 are shown in the following tables and are illustrated in the accompanying figures.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 34 P ARAMETER MEASUREMENT INFORMA TION power up, SBCLK, OSCIN, MBCLK1, MBCLK2, SYNCIN , and SRESET timing NO. P ARAMETER MIN MAX UNIT 100 † t r(VDD ) Rise time from 1.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 35 P ARAMETER MEASUREMENT INFORMA TION S8/SHAL T SRESET MBCLK2 MBCLK1 OS.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 36 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: clocks, MAL , MROMEN , MBIAEN , NMI , MRESET , and ADDRESS t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 37 P ARAMETER MEASUREMENT INFORMA TION MAL MAXPH, MAXPL, MADL0–MADL7 M.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 38 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: clocks, MRAS , MCAS , and MAL to ADDRESS t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 39 P ARAMETER MEASUREMENT INFORMA TION MADH0–MADH7 MAX0, MAX2, MROMEN .
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 40 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: read cycle t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 41 P ARAMETER MEASUREMENT INFORMA TION MDDIR MBEN MBIAEN MOE MCAS MRAS M.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 42 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: write cycle t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 43 P ARAMETER MEASUREMENT INFORMA TION Data/Parity Out ADD/STS Address A.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 44 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: TMS380C26 releases control of bus t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 45 P ARAMETER MEASUREMENT INFORMA TION 78 77 76 75a 74a 75 74 75 74 75 74 MBCLK1 MBCLK2 MBEN MDDIR MAL MBIAEN MBRQ MBGR Figure 12.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 46 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: TMS380C26 resumes control of bus t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 47 P ARAMETER MEASUREMENT INFORMA TION 80 79 80 79 80 79 80 79 80 79 80 79 MBCLK1 MAX0, MAX2, MOROMEN MAXPH, MAXPL, MADH0–MADH7, MADL0–MADL7 MRAS MCAS MW MOE Figure 13.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 48 P ARAMETER MEASUREMENT INFORMA TION 83 81 82 80 79 MBCLK1 MBCLK2 MBEN MDDIR MAL MBIAEN MBRQ MBGR 80 79 80 79 80 79 Figure 14.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 49 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: external bus master read from TMS380C26 t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 50 P ARAMETER MEASUREMENT INFORMA TION 84 MBCLK1 MBCLK2 MAX0, MAX2 85 88 MAXPH, MAXPL, MADH0–MADH7, MADL0–MADL7 Address In Data/Parity Address In Address In MDDIR MACS 86 87 Address In 89 90 91 93 92 95 94 Figure 15.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 51 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: external bus master write to TMS380C26 NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 52 P ARAMETER MEASUREMENT INFORMA TION memory bus timing: DRAM refresh timing t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 53 P ARAMETER MEASUREMENT INFORMA TION XMA TCH and XF AIL timing t M is the cycle time of one-eighth of a local memory cycle (31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 54 P ARAMETER MEASUREMENT INFORMA TION token ring — ring interface timing No. P ARAMETER MIN TYP MAX UNIT 153 Period of RCLK (see Note 14) 4Mbps 125 ns 153 Period of RCLK (see Note 14) 16 Mbps 31.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 55 P ARAMETER MEASUREMENT INFORMA TION token ring — transmitter timing (see Figure 20) NO. P ARAMETER MIN TYP MAX UNIT 159 Delay from DRVR rising edge (1.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 56 P ARAMETER MEASUREMENT INFORMA TION ethernet timing of clock signals NO. P ARAMETER MIN TYP MAX UNIT 300 CLKPHS Pulse duration of TXC 45 ns 301 CLKPER Cycle time of TXC 95 1000 ns TXC 300 2.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 57 P ARAMETER MEASUREMENT INFORMA TION ethernet timing of RCV signals — start of frame NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 58 P ARAMETER MEASUREMENT INFORMA TION ethernet timing of RCV signals — end of frame NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 59 P ARAMETER MEASUREMENT INFORMA TION ethernet timing of RCV signals — no RXC NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 60 P ARAMETER MEASUREMENT INFORMA TION ethernet timing of XMIT signals NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 61 P ARAMETER MEASUREMENT INFORMA TION 80x8x DIO read timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 62 P ARAMETER MEASUREMENT INFORMA TION (High) Output Data V alid V alid .
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 63 P ARAMETER MEASUREMENT INFORMA TION 80x8x DIO write timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 64 P ARAMETER MEASUREMENT INFORMA TION (High) V alid Data SADH0–SADH7,.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 65 P ARAMETER MEASUREMENT INFORMA TION 80x8x interrupt acknowledge timing – first SIACK pulse NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 66 P ARAMETER MEASUREMENT INFORMA TION SADH0–SADH7, SADL0–SADL7, SPH, SPL (see Note A) SRDY † SDBEN SDDIR SRD SWR SIACK SCS , SRSX, SRS0–SRS2, SBHE Only SCS needs to be inactive.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 67 P ARAMETER MEASUREMENT INFORMA TION 80x8x mode bus arbitration timing, SIF takes control NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 68 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • P ARAMETER MEASUREMENT INFORMA TION SOWN (see Note A) SDDIR SADH0–SADH7, S.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 69 P ARAMETER MEASUREMENT INFORMA TION 80x8x mode DMA read timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 70 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • P ARAMETER MEASUREMENT INFORMA TION 214 Address Data Address Extended Addres.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 71 P ARAMETER MEASUREMENT INFORMA TION 80x8x mode DMA write timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 72 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • P ARAMETER MEASUREMENT INFORMA TION 218 SDDIR SDBEN SRDY SADL0–SADH7, SADH.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 73 P ARAMETER MEASUREMENT INFORMA TION 80x8x mode bus arbitration timing, SIF returns control NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 74 P ARAMETER MEASUREMENT INFORMA TION 80x8x mode bus release timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 75 P ARAMETER MEASUREMENT INFORMA TION 68xxx DIO read timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 76 P ARAMETER MEASUREMENT INFORMA TION (High) V alid Output Data V alid .
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 77 P ARAMETER MEASUREMENT INFORMA TION 68xxx DIO write timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 78 P ARAMETER MEASUREMENT INFORMA TION SADH0–SADH7, SADL0–SADL7, SPH.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 79 P ARAMETER MEASUREMENT INFORMA TION 68xxx interrupt acknowledge cycle timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 80 P ARAMETER MEASUREMENT INFORMA TION Output Data V alid (High) Only SCS needs to be Inactive. All Others are Don’t Care.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 81 P ARAMETER MEASUREMENT INFORMA TION 68xxx mode bus arbitration timing, SIF takes control NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 82 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • P ARAMETER MEASUREMENT INFORMA TION SOWN (see Note B) SDDIR SADH0–SADH7, S.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 83 P ARAMETER MEASUREMENT INFORMA TION 68xxx mode DMA read timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 84 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • P ARAMETER MEASUREMENT INFORMA TION SALE SDBEN (see Note A) SDDIR SDT ACK (s.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 85 P ARAMETER MEASUREMENT INFORMA TION 68xxx mode DMA write timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 86 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • P ARAMETER MEASUREMENT INFORMA TION 233a 21 1a TW AIT V T1 T4 T3 T2 T1 TX T4.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 87 P ARAMETER MEASUREMENT INFORMA TION 68xxx mode bus arbitration timing, SIF returns control NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 88 POST OFFICE BOX 1443 HOUSTON, TEXAS 77001 • P ARAMETER MEASUREMENT INFORMA TION User Bus Exchange SIF Master T1 I2 I1 T4.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 89 P ARAMETER MEASUREMENT INFORMA TION 68xxx mode bus release and error timing NO.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 90 P ARAMETER MEASUREMENT INFORMA TION normal completion with delayed st.
TMS380C26 NETWORK COMMPROCESSOR SPWS010A–APRIL 1992–REVISED MARCH 1993 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 91 MECHANICAL DA T A JEDEC plastic leaded quad flat package (PQ suffix) .
IMPORT ANT NOTICE T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify , before placing orders, that information being relied on is current and complete.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Texas Instruments TMS380C26 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Texas Instruments TMS380C26 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Texas Instruments TMS380C26 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Texas Instruments TMS380C26 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Texas Instruments TMS380C26, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Texas Instruments TMS380C26.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Texas Instruments TMS380C26. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Texas Instruments TMS380C26 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
