Ic Pin Function Description - Sony XR-CA430X Service Manual

XR-CA430X/CA440

6-8. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 MN101C49KSA (SYSTEM CONTROLLER)
Pin No. Pin Name I/O
I
1 VREF– Reference voltage (0V) input terminal (for A/D converter)
FM and AM signal meter voltage detection signal input from the FM/AM tuner unit (TU1)
2 VSM I
(A/D input)
3 NIL I Not used (fixed at "L")
Key input terminal (A/D input) S907, S908, LSW905 to LSW915
KEYIN1 (SEEK/AMS – . m, SEEK/AMS + > M, MBP, D-BASS D, DSPL, MTL PTY, TA,
4 I
ATA 6, BL SKIP 5, SHUF 4, REP 3, 2 DISC +, 1 DISC– keys input)
Key input terminal (A/D input) S901 to S906, LSW901 to LSW904 (OFF, SRC SOURCE, +
KEYIN0
5 I
(VOLUME), – (VOLUME), MODE o, SEL, Z, ATF, BTM SENS, AF keys input)
6 RCIN0 I Rotary remote commander key input terminal (A/D input) (XR-CA440 only)
7 QUALITY I Noise level detection signal input at SEEK mode (A/D input)
8 MPTH I Multi-path detection signal input from the RDS decoder (IC51) (A/D input)
9 NIL I Not used (fixed at "L")
I
10 VREF+ Reference voltage (+5V) input terminal (for A/D converter)
VDD —
11 Power supply terminal (+5V)
OSCOUT
12 O Main system clock output terminal (18.432 MHz)
OSCIN
13 I Main system clock input terminal (18.432 MHz)
VSS —
14 Ground terminal
XI I
15 Sub system clock input terminal (32.768 kHz)
XO O
16 Sub system clock output terminal (32.768 kHz)
I
17 MMOD Selection signal of memory mode input terminal "L":single chip mode (fixed at "L")
LCDSO
18 O Serial data output to the liquid crystal display driver (IC901)
LCDCE
19 O Chip enable signal output to the liquid crystal display driver (IC901) "H" active
LCDCKO
20 O Serial data transfer clock signal output to the liquid crystal display driver (IC901)
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
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
26 KEYACK
I
and eject keys in the power off status On at input of "H"
Synchronized detection signal of RDS data block input from the RDS decoder (IC51)
27 DAVN I
"H" active
Battery detection signal input from the SONY bus interface (IC581)
28 BUIN
I
"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")
System reset signal input from the reset signal generator (IC551) and reset switch (S551)
33 RESET I
"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 I 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)
Description
24
Pin No. Pin Name I/O
44 BUSCKO O Serial data transfer clock signal output to the SONY bus interface (IC581)
Two-way data IIC bus with the FM/AM tuner unit (TU1), RDS decoder (IC51) and electrical
45 IIC SIO I/O
volume (IC331)
46 NCO O Not used (open)
IIC bus clock signal output to the FM/AM tuner unit (TU1), RDS decoder (IC51) and electrical
47 IIC CKO O
volume (IC331)
Standby on/off control signal output to the power amplifier (IC751)
48 AMPON O
"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)
Tape auto music sensor control signal output to the CXA2509AQ (IC301)
52 AMSON O
"L": auto music sensor on
Forward/reverse control signal output to the CXA2509AQ (IC301)
53 F/ROUT O
"L": reverse direction, "H": forward direction
54 MTLON O METAL on/off control signal output to the CXA2509AQ (IC301) "H": METAL on
Tape muting on/off control signal output to the CXA2509AQ (IC301) "H": muting on
55 TAPATT O
Active at ATA, FF/REW mode
56
NCO O Not used (open)
Whether a music is present or not from CXA2509AQ (IC301) is detected at auto music sensor
57 AMSIN I
"L": music is present, "H": music is not present
58 NCO O Not used (open)
Pre amplifier muting on/off control signal output to the electrical volume (IC331)
59 VOLATT O
"L": muting on
60 to 64
NCO O Not used (open)
Internal flash memory data write mode detection signal input terminal "L": data write mode
65 FLASH_W I
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 (XR-CA440 only) "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)
Setting terminal for the illumination color
76 COLSEL I
"L": amber (XR-CA430X: AMBER), "H": green (XR-CA440: GREEN)
77 to 81
NCO O Not used (open)
A/D converter power control signal output terminal
82 AD ON O 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
Power on/off control signal output of the illumination LED and liquid crystal display driver
83 ILLON O
(IC901) "H": power on
Rotation detection signal input from supply reel sensor and take-up reel sensor on the mechanism
84 REL I
deck
85 POS3 I
Tape position (EJECT/FF/REW/REV/
86 POS2 I
FWD mode) detect input from the tape
87 POS0 I
operation switch on the deck mechanism
88 POS1 I
Motor drive signal output to the loading motor drive (IC351) "H" active
89 LMLOD O
(For the loading direction and forward side operation) *1
Motor drive signal output to the loading motor drive (IC351) "H" active
90 LMEJ O
(For the eject direction and reverse side operation) *1
24
Description
POS3: "L": REV and EJECT mode, "H": others mode
POS2: "L": REW mode, "H": others mode
POS0: "L": EJECT mode, "H": others mode
POS1: "L": FF and FWD mode, "H": others mode