Sony HCD-RG295 Servise Manual page 57

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MAIN BOARD IC901 uPD78F0547GC (S)-UBT-A (SYSTEM CONTROLLER)
Pin No.
Pin Name
1
I-AC-PULSE
2
O-REC/PB
3
O-REC-MUTE
4 O-BIAS
5
O-STK-MUTE
6
O-SW_GAIN
7
O-POWER-RELAY
8
O-XM-POWER3.3
9
I-AC-CUT
10
I-XRESET
11
XT2 (32.768KHZ)
12
XT1 (32.768KHZ)
13 FLMDO
14
X2 (16MHZ)
15
X1 (16MHZ)
16
REGC
17
VSS
18 EVSS
19
VDD
TE
L 13942296513
20
EVDD
21
O-SYS-MUTE
22 O-SWR
O-FRONT-SP-
23
RELAY
24 O-XTCN
25
O-MP3-RST
O-MP3-XLAT/
26
O-MP3-CS
27 I-MP3-ACK
O-XLAT/
28
O-MP3-STB
29
I-MP3-REQ
O-MP3-CS/
30
O-MP3-LP
O-D-MUTE/
31
O-XLT
32
O-XRST
33
O-LM-R
34
O-LM-F
www
35 O-TM-R
36
O-TM-F
.
I-CD-NUMBER-
37
SENS
38
I-OPEN-SW
39
I-XTUNED
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I/O
I AC power detection signal input terminal
O Recording/playback selection signal output terminal "L": playback, "H": recording
O Recording muting on/off control signal output terminal "L": muting on
O Recording bias on/off control signal output terminal "H": bias on
O Standby signal output to the power amplifier (for front speaker)
O Sub woofer gain control signal output terminal Not used
O Power on/off relay drive signal output terminal "H": power on
O Power on/off control signal output terminal for XM section Not used
I AC power off detection signal input terminal
System reset signal input from the reset signal generator "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O Sub system clock output terminal (32.768 kHz)
I Sub system clock input terminal (32.768 kHz)
I Internal flash memory data writing mode control signal input terminal
O Main system clock output terminal (16 MHz)
I Main system clock input terminal (16 MHz)
- External capacitor connection terminal for regulator
- Ground terminal
- Ground terminal
- Power supply terminal (+3.3V)
- Power supply terminal (+3.3V)
O Muting on/off control signal output terminal "L": muting on
Sub woofer speaker on/off relay drive signal output terminal "L": sub woofer speaker on
O
(RG495/RG595 models)
O Front speaker on/off relay drive signal output terminal "H": front speaker on
Oscillation circuit on/off control signal output to the CD DSP
O
"L": oscillation stop, "H": self-oscillation
O System reset signal output terminal Not used
O MP3 serial data latch pulse signal output to the CD DSP
I MP3 acknowledge signal input from the CD DSP
O CD serial data latch pulse signal output to the CD DSP
I MP3 data request signal input from the CD DSP
O MP3 data request signal output to the CD DSP
O System reset signal output to the motor/coil driver "L": reset
O System reset signal output to the CD DSP "L": reset
O Loading motor control signal output terminal (reverse direction)
O Loading motor control signal output terminal (forward direction)
O Table motor control signal output terminal (reverse direction)
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O Table motor control signal output terminal (forward direction)
i
I Disc table address sensor input terminal
I Disc table open/close detection switch input terminal "L": open, "H": close
I Tuning detection signal input terminal Not used
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Description
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HCD-RG295/RG495/RG595
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