Sony MCE-K700, Service Manual

Page: 36 / 66

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• IC104 DIGITAL SIGNAL PROCESSOR FOR KARAOKE (CXD2721Q)/MAIN board
Pin Name
XLT
N.C
RVDT
N.C
AVD0
ADS0
XRST
X768
VSS
VDD1
VSS1
XWO
BFOT
BSL2
BSL1
VSS2
VSS1
AVS3
AIN3
LO3
AVD3
AVD2
AIN2
LO2
AVS2
N.C
AOUT2
AVS5
N.C
AVD5
AO2N
AO2P
VDD7
XTLO
XTLI
VSS9
AOIN
AO1P
Pin No.
1
2-3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27-28
29
30
31
32
33
34
35
36
37
38
39
40
I/O
I
–
I
–
–
–
I
I
–
–
–
I
O
I
I
–
–
–
I
I
–
–
I
I
–
–
O
–
–
–
O
O
–
O
I
–
O
O
Function
Latch input from system controller (CXP82532-010Q)
Normally open
Data input from system controller (CXP82532-010Q)
Normally open
Digital power supply pin for DRAM
Digital ground pin for DRAM
System reset input (“L” reset)
Test input. Normally fixed at “L”.
Digital block ground
Digital block power supply
Digital block ground
Window open input for synchronism. Normally “H” (Connected to +5V)
Clock dividing output (384/768/256/512fs)
Frequency diving rate setting of BFOT
Frequency diving rate setting of BFOT
Digital block ground
Digital block power supply
Ground for CH-3 • AD converter
Analog input for CH-3 • AD converter (for MIC input)
Analog input for CH-3 • AD converter. OP amplifier inverter output for LPF (for MIC input)
Power supply for CH-3 • AD converter
Power supply for CH-2 • AD converter
Analog input for CH-2 • AD converter
Analog input for CH-2 • AD converter. OP amplifier inverter output for LPF
Ground for CH-2 • AD converter
Normally open
CH-2 • DA converter • LPF output (Not used open)
Ground for CH-2 • DA converter
Normally open
Power supply for CH-2 • DA converter
CH-2 • DA converter analog negative phase output
CH-2 • DA converter analog positive phase output
Digital power supply for master clock
Crystal oscillator output
Crystal oscillator input
Digital ground for master clock
CH-1 • DA converter analog negative phase output
CH-1 • DA converter analog positive phase output