XR-CA600X/CA620X
24
24
6-10.
IC PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
I/O
Description
44
BUSCKO
O
Serial data transfer clock signal output to the SONY bus interface (IC581)
45
IIC SIO
I/O
Two-way data IIC bus with the FM/AM tuner unit (TU1), 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), 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
I/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)
65
FLASH_W
I
Internal flash memory data write mode detection signal input terminal “L”: data write mode
Not used (open)
66
TESTIN
I
Setting terminal for the test mode “L”: test mode, normally fixed at “H”
67
RCIN1
I
Rotary remote commander shift key input terminal “L”: shift key on
68 to 73
NCO
O
Not used (open)
74
EEP_SIO
I/O
Two-way data bus for tuner EEPROM with the FM/AM tuner unit (TU1)
75
EEP_CKO
I/O
Two-way bus clock signal for tuner EEPROM with the FM/AM tuner unit (TU1)
76
COLSEL
I
Setting terminal for the illumination color
“L”: amber, “H”: green Fixed at “L” in this set
77
SWSHIFT
O
VCO shift control signal output to the FM/AM tuner unit (TU1) for SW
“L”: EXCEPT SW, “H”: SW
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 (RE501) (for VOLUME control)
82
XKEYON
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
83
ILLON
O
Power on/off control signal output of the illumination LED and liquid crystal display driver
(IC501) “H”: power on
84
REL
I
Rotation detection signal input from supply reel sensor and take-up reel sensor on the mechanism
deck
•
MAIN BOARD IC501 MN101C49KTE (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
VREF–
I
Reference voltage (0V) input terminal (for A/D converter)
2
VSM
I
FM and AM signal meter voltage detection signal input from the FM/AM tuner unit (TU1)
(A/D input)
3
NIL
I
Not used (fixed at “L”)
4
KEYIN1
I
Key input terminal (A/D input) LSW502 to LSW510, LSW514
(MENU, DISC/, DISC/PRESET–,
>
SEEK+
M
,
.
SEEK–
m
, SOUND,
ENTER, DSPL, LIST, MODE
o
keys input)
5
KEYIN0
I
Key input terminal (A/D input) LSW501, LSW513, LSW515 to LSW522 (OFF, SOURCE, EQ7,
MBP, 6, 5, 4, 3, SHUF 2, REP 1 keys input)
6
RCIN0
I
Rotary remote commander key input terminal (A/D input)
7, 8
NIL
I
Not used (fixed at “L”)
9
DSTSEL
I
Destination setting terminal (A/D input) Fixed at center voltage in this set
10
VREF+
I
Reference voltage (+5V) input terminal (for A/D converter)
11
VDD
—
Power supply terminal (+5V)
12
OSCOUT
O
Main system clock output terminal (18.432 MHz)
13
OSCIN
I
Main system clock input terminal (18.432 MHz)
14
VSS
—
Ground terminal
15
XI
I
Sub system clock input terminal (32.768 kHz)
16
XO
O
Sub system clock output terminal (32.768 kHz)
17
MMOD
I
Selection signal of memory mode input terminal “L”:single chip mode (fixed at “L”)
18
LCDSO
O
Serial data output to the liquid crystal display driver (IC501)
19
LCDCE
O
Chip enable signal output to the liquid crystal display driver (IC501) “H” active
20
LCDCKO
O
Serial data transfer clock signal output to the liquid crystal display driver (IC501)
21 to 23
NCO
O
Not used (open)
24
SYSRST
O
Reset signal output to the SONY bus interface (IC581) “L”: reset
25
BUSON
O
Bus on/off control signal output to the SONY bus interface (IC581) “L”: bus on
26
KEYACK
I
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
and eject keys in the power off status On at input of “H”
27
NIL
I
Not used (fixed at “L”)
28
BUIN
I
Battery detection signal input from the SONY bus interface (IC581)
“L” is input at low voltage
29
SIRCS
I
SIRCS remote control signal input terminal Not used (open)
30, 31
NIL
I
Not used (fixed at “L”)
32
NIH
I
Not used (fixed at “H”)
33
RESET
I
System reset signal input from the reset signal generator (IC551) and reset switch (S551)
“L”: reset “L” is input for several 100 msec after power on, then it changes to “H”
34
TUNON
O
Tuner system power supply on/off control signal output “H”: tuner power on
35
BEEP
O
Beep sound drive signal output to the power amplifier (IC751)
36
PW_ON
O
Main system power supply on/off control signal output “H”: power on
37
NCO
O
Not used (open)
38
ACCIN
I
Accessory detection signal input “L”: accessory on
39
NCO
O
Not used (open)
40
TELATT
I
Telephone attenuate signal input At input of “H”, the signal is attenuated by –20 dB
41
NIH
I
Not used (fixed at “H”)
42
BUSSO
O
Serial data output to the SONY bus interface (IC581)
43
BUSSI
I
Serial data input from the SONY bus interface (IC581)
