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AT2004
4 Channels ADPCM Processor with Echo Cancellation and Conferencing
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©2001 Atelic System, Inc
AT2004 PIN Assignment
28-PIN SOP
NC
1
28
RSTZ
2
27
TM0
3
26
TM1
4
25
NC
5
24
A0
6
23
A1
7
22
NC
8
21
NC
9
20
SYNC4
10
19
SYNC3
11
18
XTAL2
12
17
XTAL1
13
16
VSS1
14
15
VDD
YIN
CKLA
FSY
YOUT
SCSZ
SDI/SDO
SCLK
XOUT
VSS2
SYNC1
CLKP
XIN
SYNC2
AT2004 SOP Pin Assignment
1.
When there are multiple AT2004 used on the same system, A1, A0 are used to identify the chip.
2.
A1, A0 are for chip ID. Values are from 00 to 03. They should be connected to microcontroller I/O line or hard wired to either VCC or ground.