Sony STR-DB900 Service Manual page 39

DIGITAL BOARD IC202 MB91354APMT-G-104-BNDE1 (SYSTEM CONTROL)
Pin No. Pin Name
1 DSP-DO
2 XDSP-RST
3 DSP-PM
4 XDSP-CS
5 DSP-HACN
6 DSP-BST
7 DSP-GP9
8 DSP-BSTSEL
9 DSP-GP12
10 NO-USE
11 DIR-DI
12 DIR-CLK
13 DIR-ZERO
14 DIR-ERR
15 DIR-CE
16 DIR-STAT
17 VSS
18 VCC
19 SD12-SEL
20 XDIR-MODE
21 XDIR-DO
22 DIR-CLKSEL1
23 NO-USE
24 DAMP-DATA
25 DAMP-CLK
26 XDAMP-RST
27 XDAMP-NSMUTE
28 DAMP-CS1-L/R
29 DAMP-CS2-C/SW
30 DAMP-CS3-SL/SR
31 DAMP-CS4-SB
32 XDAMP-EN
33 XDAMP-PROTECT
34 NO-USE
35 VSS
36 VCC
37 HP-SW
38 RELAY
39 HP-RY-501
40 NO-USE
41 DSEL-RL
42 RL-DETECT/RL
43 DSEL-B
44 DSEL-A
45 DAVS
46 DAVC
47 V-CONT
I/O
I DSP serial data signal input from CXD9718Q
O DSP reset signal output to CXD9718Q
O DSP PM signal output to CXD9718Q
O DSP chip select signal output to CXD9718Q
I DSP acknowledge signal input from CXD9718Q
O DSP BST signal output to CXD9718Q
I/O DSP audio signal input/output to CXD9718Q
O DSP BST select signal output
O DSP GP data signal output to CXD9718Q
— Not used. (Connected to ground)
O DIR serial data signal output to LC89056W
O DIR serial clock signal output to LC89056W
I DIR zero signal input to LC89056W
I DIR error signal input
O DIR chip enable signal output to LC89056W
I DIR start signal input from LC89056W
— Ground
— Power supply (+3.3V)
O SACD select signal output
O DIR reset signal output to LC89056W
I DIR serial data signal input from LC89056W
O DIR CK select signal output to LC89056W
— Not used. (Connected to ground)
O Serial data output for digital amp
O Serial clock output for digital amp
O Reset signal output for digital amp
O NS mute signal output for digital amp
O Chip select signal output 1 for L/R digital amp
O Chip select signal output 2 for C/SW digital amp
O Chip select signal output 3 for SL/SR digital amp
O Chip select signal output 4 for SB digital amp
O Enable signal output for digital amp
I Protect signal input for digital amp
— Not used. (Connected to ground)
— Ground
— Power supply (+3.3 V)
I Headphone switch signal input
O Subwoofer mute signal output
I Headphone mute signal output
— Not used. (Connected to ground)
I Not used. (Pull down)
I Not used. (Pull down)
O Digital input select signal output
O Digital input select signal output
— Ground
— Power supply (+3.3 V)
O Voltage control signal output
Description
STR-DB900
39