Sony HCD-HPR90 - Receiver Component For Mini Hi-fi Systems Service Manual page 48

HCD-HPR90/HPR99XM
Pin No.
Pin Name
43
CD XLT
44
MP3 ACK
45
MP3 REQ
46
MP3 XLAT
47
MP3 IREQ
48
CD XRST
49
CD XATCN
50
CD DRIVER MUTE
51
SEL A
52
ST TUNED
53
ST CE
54 ST DOUT
55
ST CLK
56
ST DIN/STEREO
57
POWER ON/OFF
58 HP MUTE
59
SEL B
60
LINE MUTE
61
AMP SI
62 VCC
63
AMP SC
64
VSS
65
SEL INH
S-MASTER
66
PG MUTE
S-MASTER
67
SOFT MUTE
68
S-MASTER RST
69
S-MASTER SD
70
S-MASTER DATA
71
S-MASTER SHIFT
72
S-MASTER LATCH
73
NSP MUTE
74
WAKE UP KEY
75
S-MASTER INIT
76 to 80
-
81
NO USE
82
XM POWER 3.3V
83
XM POWER 5V
84
AC DET
85
XM DTIC CMD
86
EEPROM SDA
87 EEPROM SCL
88
STANDBY LED
89, 90 -
91 to 93
KEY3 to KEY1
94 VOLUME
48
I/O
O CD serial data latch pulse signal output to the CD DSP
I MP3 acknowledge signal input from the CD DSP
O MP3 data request signal output to the CD DSP
O MP3 serial data latch pulse signal output to the CD DSP
I MP3 data request signal input from the CD DSP
O System reset signal output to the CD DSP "L": reset
Oscillation circuit on/off control signal output to the CD DSP
O
"L": oscillation stop, "H": self-oscillation
O Muting signal output to the motor/coil driver
O Control signal output to the function selector
I Tuning detection signal input terminal Not used
O Chip enable signal output to the tuner (FM/AM)
O Serial data output to the tuner (FM/AM)
O Serial data transfer clock signal output to the tuner (FM/AM)
I Serial data and stereo detection signal input from the tuner (FM/AM)
O Sub power on/off relay drive signal output terminal "H": power on
O Headphone muting on/off control signal output terminal "H": muting on
O Control signal output to the function selector
O Line muting on/off control signal output terminal "H": muting on
O Serial data output to the electrical volume
- Power supply terminal (+3.3V)
O Serial data transfer clock signal output to the electrical volume
- Ground terminal
O Control signal output to the function selector
O PG muting control signal output to the stream processor
O Soft muting control signal output to the stream processor
O System reset signal output to the digital power amplifier "L": reset
O Shut down signal input from the digital power amplifier "L": shut down
O Serial data output to the stream processor
O Serial data transfer clock signal output to the stream processor
O Serial data latch pulse signal output to the stream processor
O NSP muting control signal output to the stream processor
I Wake up signal input terminal
O Initialize signal output to the stream processor
- Not used
O Not used
O Power on/off control signal output terminal for the XM circuit (HPR99XM)
O Power on/off control signal output terminal for the XM circuit (HPR99XM)
I AC power detection signal input terminal
O Command mode select signal output to the XM receiver (HPR99XM)
I Serial data input from the EEPROM
I Serial data transfer clock signal input from the EEPROM
O LED drive signal output terminal for STANDBY indicator "H": LED on
- Not used
I Front panel key input terminal (A/D input)
I Jog dial pulse input from the rotary encoder (VOLUME) (A/D input)
Description