VSR CODEC with DRAM CONTROL
4
MX812 PRELIMINARY INFORMATION
Application Information
V
DD
D
C
5
V
DD
D
GND
RAS
A10/R2
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D
GND
RAS
A10/R2
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
WE
CAS
CAS
WE
D
XTAL
IRQ
SERIAL CLOCK
COMMAND DATA
CS
REPLY DATA
V
BIAS
C
1
AUDIO OUT
E
BIAS
AUDIO IN
C
3
V
SS
C
2
C
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
D
R
A
M
MX812J
22
21
20
19
18
17
16
15
Component
C
1
C
2
C
3
C
4
Value
Dependent upon the input
impedance of the driven stage
1.0µF
0.1µF
1.0µF non-electrolytic
Tolerance: Capacitors = -50/+100%
Figure 2 - Recommended External Components
+ 5.0V
V
DD
XTAL
XTAL
V
CC
XTAL/CLOCK
STORE
AUDIO IN
Cellular
Audio
PLAY
Processor
eg. MX8n6
AUDIO OUT
MX812
E
BIAS
V
SS
V
BIAS
V
BIAS
V
SS
Figure 3 - Interfacing to an Audio Processor
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480076.003
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