27
XR-L500/L500V/L500X
Pin No.
Pin Name
I/O
Description
41
NIH
I
Not used (fixed at “H”)
42
BUSSO
O
Serial data output to the SONY bus interface Not used (open)
43
BUSSI
I
Serial data input from the SONY bus interface Not used (fixed at “L”)
44
BUSCKO
O
Serial data transfer clock signal output to the SONY bus interface Not used (open)
45
IIC SIO
I/O
Two-way data IIC bus with the FM/AM tuner unit (TU1), RDS decoder (IC51) and electrical
volume (IC331)
46
NCO
O
Not used (open)
47
IIC CKO
O
IIC bus clock signal output to the FM/AM tuner unit (TU1), RDS decoder (IC51) and electrical
volume (IC331)
48
AMPON
O
Standby on/off control signal output to the power amplifier (IC751)
“L”: standby mode, “H”: amplifier on
49
AMPATT
O
Muting on/off control signal output to the power amplifier (IC751) “L”: muting on
50
ATT
O
Audio line muting on/off control signal output “H”: muting on
51
NCO
O
Not used (open)
52
AMSON
O
Tape auto music sensor control signal output to the CXA2509AQ (IC301)
“L”: auto music sensor on
53
F/ROUT
O
Forward/reverse control signal output to the CXA2509AQ (IC301)
“L”: reverse direction, “H”: forward direction
54
MTLON
O
METAL control in/out terminal
At initial mode: valid/invalid selection input of METAL function (valid at “L” input)
At normal mode: METAL on/off control signal output to the CXA2509AQ (IC301)
(METAL on at “H” output)
55
TAPATT
O
Tape muting on/off control signal output to the CXA2509AQ (IC301) “H”: muting on
Active at ATA, FF/REW mode
56
NCO
O
Dolby control in/out terminal Not used (pull down)
57
AMSIN
I
Whether a music is present or not from CXA2509AQ (IC301) is detected at auto music sensor
“L”: music is present, “H”: music is not present
58
4VPRE
I
4V PREOUT setting terminal “L”: 4V PREOUT on Fixed at “H” in this set
59
VOLATT
O
Pre amplifier muting on/off control signal output to the electrical volume (IC331)
“L”: muting on
60 to 64
NCO
O
Not used (open)
I
Internal flash memory data write mode detection signal input terminal “L”: data write mode
Not used (open)
I
Setting terminal for the test mode “L”: test mode, normally fixed at “H”
I
Rotary remote commander shift key input terminal “L”: shift key on
O
Not used (open)
Two-way data bus for tuner EEPROM with the FM/AM tuner unit (TU1)
Two-way bus clock signal for tuner EEPROM with the FM/AM tuner unit (TU1)
I
Setting terminal for the illumination color
“L”: amber, “H”: green Fixed at “L” in this set
77
NCO
O
Not used (open)
78
DOORSW
I
Front panel open/close detection signal input “L” is input when the front panel is closed
79
DOORIND
O
LED drive signal output of the MD disc slot illumination and
Z
indicator (LED810, LSW810)
“H”: LED on “H” is output to turn on the LED when front panel is opened
80, 81
RE_IN1, RE_IN0
I
Dial pulse input of the rotary encoder (RE901) (for VOLUME control)
82
AD ON
O
A/D converter power control signal output terminal
When the KEYACK (pin
wh
) that controls reference voltage power for key A/D conversion input
is active, “L” is output from this terminal to enable the input
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