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Z8932120FSC Datasheet(PDF) 3 Page - Zilog, Inc. |
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Z8932120FSC Datasheet(HTML) 3 Page - Zilog, Inc. |
3 / 40 page Z89321/371/391 Zilog 16-Bit Digital Signal Processors DS97DSP0100 P R E L I M I N A R Y 3 1 PIN DESCRIPTION Figure 2. Z89321/371 40-Pin DIP Pin Assignments EXT12 EXT13 EXT14 VSS EXT15 EXT3 EXT4 VSS EXT5 EXT6 EXT7 TXD EXT8 EXT9 VSS EXT10 EXT11 UI1 UI0 SCLK RXD VSS EXT2 EXT1 EXT0 VSS FS1 U01 U00 /INT0 FS0 CLK /DS VDD EA2 EA1 EA0 /RESET RD//WR VDD 40 DIP 40 - Pin 1 20 21 Table 1. Z89321/371 40-Pin DIP Pin IdentiÞcation No. Symbol Function Direction 1-3 EXT12- EXT14 External Data Bus Input/Output 4VSS Ground 5 EXT15 External Data Bus Input/Output 6-7 EXT3-EXT4 External Data Bus Input/Output 8VSS Ground 9-11 EXT5-EXT7 External Data Bus Input/Output 12 TXD Serial Output to CODECs Output 13-14 EXT8-EXT9 External Data Bus Input/Output 15 VSS Ground 16-17 EXT10- EXT11 External Data Bus Input/Output 18 UI1 User Input Input 19 UI0 User Input Input 20 SCLK CODEC Serial Clock Input/Output* 21 VDD Power Supply Input 22 RD//WR Strobes for External Bus Output 23 /RESET Reset Input 24-26 EA0-EA2 External Address Bus Output 27 VDD Power Supply Input 28 /DS Data Strobe for External Bus Output 29 CLK Clock Input 30 FS0 CODEC 0 Frame Sync Input/Output* 31 /INT0 Interrrupt Input 32-33 UO0-UO1 User Output Output 34 FS1 CODEC 1 Frame Sync Input/Output* 35 VSS Ground 36-38 EXT0-EXT2 External Data Bus Input/Output 39 VSS Ground 40 RXD Serial Input from CODECs Input Notes: *Input/Output is defined by interface mode selection. HALT/WAIT pins not available on 40-pin DIP package. Table 1. Z89321/371 40-Pin DIP Pin IdentiÞcation No. Symbol Function Direction |
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