Sony STR-DA7100ES Service Manual page 30

STR-DA7100ES
Ver. 1.2
• IC Pin Function Description
MOTHER COM BOARD IC1800 MB89537APFM-G-694E1 (SUB SYSTEM CONTROLLER)
Pin No. Pin Name
1 I- LIMIT
2 MOD2
3 TEMP
4 to 9 CUR1 to CUR6
10 DIAG (TEMP)
11 AVCC
12 AVR
13 AVSS
14 U-MAIN
15 AC-OFF
16 PWM-MODE
17 FRQ
18 DC2
19 RST
20, 21 MOD0, MOD1
22 X0
23 X1
24 VSS
25 VOL-CLK
26 VOL-DATA
27 VOL-LAT
28 DAC-MUTE
29, 30 (P23), (P22)
31 4/8SW
32 SUR_A PS_SP
33 NC
34 4/8OUT
35 NO-USE
36 EN
37 DC3
38 INIT
39 DC4
40 (P10)
41 SOFT-MUTE
42 U-SUB1
43 LAT4
44 LAT3
45 LAT2
46 LAT1
47 FRONT (A) RY
48 FRONT (B) RY
49 NC
50 DC5
51 SHIFT
52 SCDT
53 DC6
30
I/O
I Current detection signal input from the protect circuit
I Not used
I Thermistor connection terminal for abnormal temperature detection (A/D input)
I Current detection terminal for speaker output section (A/D input)
I Abnormal temperture detection terminal for the power amplifier (A/D input)
- Power supply terminal (+3.3V) (for analog system)
I Reference voltage (+3.3V) input terminal
- Ground terminal (for analog system)
I Clock signal input from main system controller
I AC off detection signal input terminal "L": AC off
- Not used
I Frequency detection terminal (1 kHz detection)
I Voltage detection terminal for speaker output section
I Reset signal input from the main system controller "L": reset
I Setting terminal for memory access mode Normally: fixed at "L"
I System clock input terminal (12.5 MHz)
O System clock output terminal (12.5 MHz)
- Ground terminal
Serial data transfer clock signal output to the power amplifier power supply control D/A
O
converter
O Serial data output to the power amplifier power supply control D/A converter
Serial data latch pulse signal output to the power amplifier power supply control D/A
O
converter
O Muting on/off control signal output terminal
- Not used
I IMPEDANCE SELECTOR switch input terminal
O Relay drive signal output terminal
- Not used
I Relay drive signal (for speaker impedance 4 /8 selection) output terminal
I Not used
O Enable/Disable control signal output terminal
I Voltage detection terminal for speaker output section
O Initialize signal output to the PCM/PWM processor
I Voltage detection terminal for speaker output section
- Not used
O Muting on/off control signal output terminal
I Serial data input from main system controller
O Serial data latch pulse signal (for surround back) output to the PCM/PWM processor
O Serial data latch pulse signal (for surround) output to the PCM/PWM processor
O Serial data latch pulse signal (for center) output to the PCM/PWM processor
O Serial data latch pulse signal (for front) output to the PCM/PWM processor
O Relay drive signal output terminal
O Relay drive signal output terminal
- Not used
I Voltage detection terminal for speaker output section
O Serial data transfer clock signal output to the PCM/PWM processor
O Serial data output to the PCM/PWM processor
I Voltage detection terminal for speaker output section
Description