Sony MEX-R5 Service Manual page 56

MEX-R5
Pin No. Pin Name
45
KEY_ACK
46
BU_IN
47 to 49
MD0 to MD2
50
TUN_ATTIN
51
DAVN
52
AD_ON
53
Z_MUTE
54
SELFSW
55 ACCIN
56
UNISI
57
UNISO
58
UNICLK
59 BUSON
60
SYSRST
61
NC
62
SIRCS
63 INSW
64
NC
65
DSW
66
NC
67 VMUTEIN
68
CD_RTS
69
CD_CTS
70
CD_RST
71 RF_ON
72
LOAD
73
EJECT
74
NC
75 RSTX
76
RAMBU
77, 78
X1A, X0A
79
VSS
80, 81
X0, X1
82 VCC
83
RCIN1
84
TELLATT
85
ILLIN
86, 87
NC
88 CPRM_W
89
FLASH_W
90, 91
CNT A, CNT B
92, 93
NC
56
I/O
Acknowledge signal (wake up signal) input terminal for the key entry Acknowledge signal is
I
input to accept any function key in the standby status On at input of "H"
I Back up power supply detection signal input terminal "L" is input at low voltage
I Setting terminal for the CPU operational mode
I Attenuate request signal input from the tuner unit (AEP, UK, Russian models only)
I Synchronize detection signal input of RDS data block (AEP, UK, Russian models only)
A/D converter power control signal output
O When the KEY_ACK (pin 45) that controls reference voltage power for key A/D conversion input
is active, "L" is output from this terminal to enable the input
I Muting on/off control signal input from the D/A converter
I Loading detection switch input from the DVD mechanism deck block
I Accessory power detection signal input terminal "L": accessory power on
I Serial data input from the SONY bus interface IC
O Serial data output to the SONY bus interface IC
O Serial data transfer clock signal output to the SONY bus interface IC
O SONY bus on/off control signal output terminal "L": bus on
O Reset signal output to the SONY bus interface IC
O Not used
I SIRCS signal input terminal
I Disc insert detection switch input from the DVD mechanism deck block
O Not used
I Chucking end detection switch input from the DVD mechanism deck block
O Not used
I Video muting request signal input terminal Not used
I Data send request signal input for UART communication
O Data send request signal output for UART communication
O Reset signal output to the DVD processor and flash memory
O Power on/off control signal output for the RF unit
O Loading motor control signal output terminal (loading direction)
O Loading motor control signal output terminal (eject direction)
O Not used
I System reset signal input from the reset signal generator and reset switch "L": reset
Internal RAM reset detection signal input from the reset signal generator
I
Input terminal to check that RAM data are not destroyed due to low voltage
I/O System clock input/output terminal (32.768 kHz)
- Ground terminal
I/O System clock input/output terminal (3.8684 MHz)
- Power supply terminal (+3.3V)
I Rotary remote commander shift key input terminal
Telephone muting detection signal input terminal
I
At input of "H", the audio signal is attenuated by 20 dB
Illuminate line detect signal input terminal for the automatic dimmer control
I
"L": detected the illumination line (lighting is made dark)
O Not used
I CPRM KEY writing mode detection input when internal flash memory writing Not used
I Writing mode detection input when internal flash memory writing
O RF unit control signal output terminal
O Not used
Description