Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74ACT8990FNR Datenblatt(PDF) 4 Page - Texas Instruments |
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SN74ACT8990FNR Datenblatt(HTML) 4 Page - Texas Instruments |
4 / 15 page SN54ACT8990, SN74ACT8990 TEST-BUS CONTROLLERS IEEE STD 1149.1 (JTAG) TAP MASTERS WITH 16-BIT GENERIC HOST INTERFACES SCAS190E – JUNE 1990 – REVISED JANUARY 1997 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Table 1. Terminal Assignments TERMINAL TERMINAL TERMINAL TERMINAL NO. NAME NO. NAME NO. NAME NO. NAME A2 NC B10 NC F11 NC K6 NC A3 ADRS4 B11 NC G1 DATA5 K7 VCC A4 NC C1 DATA2 G2 NC K8 DATA15 A5 ADRS1 C2 DATA1 G10 NC K9 TDI0 A6 ADRS0 C3 NC G11 TMS1 K10 NC A7 NC C10 TMS4/EVENT2 H1 NC K11 TCKI A8 INT C11 TMS5/EVENT3 H2 DATA6 L2 DATA9 A9 RD D1 DATA4 H10 TDO L3 NC A10 TRST D2 DATA3 H11 TMS0 L4 DATA12 B1 DATA0 D10 TMS3/EVENT1 J1 DATA8 L5 DATA13 B2 NC D11 NC J2 DATA7 L6 NC B3 ADRS3 E1 NC J10 TCKO L7 DATA14 B4 ADRS2 E2 GND J11 NC L8 TOFF B5 NC E10 VCC K1 NC L9 TDI1 B6 NC E11 TMS2/EVENT0 K2 NC L10 NC B7 GND F1 VCC K3 DATA10 B8 RDY F2 NC K4 DATA11 B9 WR F10 GND K5 NC NC – No internal connection functional block diagram 4 2 2 16 16 16 5 RD WR RDY INT ADRS(4 – 0) DATA(15 – 0)† Host Interface Target Interface TMS(5 – 2)/ EVENT(3 – 0)† TMS(1 – 0) TDI(1 – 0)† TDO TOFF† TCKO TCKI TRST † Event Block Sequencer Block Counter Block Command Block Serial Block Host Block Read Data Bus Write Data Bus † Inputs have internal pullup resistors. |
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