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Z89321 Datasheet(PDF) 3 Page - Zilog, Inc.

Part # Z89321
Description  16-Bit Digital Signal Processors
PDF  40 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z89321 Datasheet(HTML) 3 Page - Zilog, Inc.

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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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