6-10. Ic Pin Function Description - Sony XR-CA600X Service Manual

XR-CA600X/CA620X

6-10. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 MN101C49KTE (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) LSW502 to LSW510, LSW514
4 KEYIN1 I (MENU, DISC/PRESET+, DISC/PRESET–, > SEEK+ M, . SEEK– m, SOUND,
ENTER, DSPL, LIST, MODE o keys input)
Key input terminal (A/D input) LSW501, LSW513, LSW515 to LSW522 (OFF, SOURCE, EQ7,
KEYIN0
5 I
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
I
10 VREF+ 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)
OSCIN
13 I Main system clock input terminal (18.432 MHz)
14 VSS — Ground terminal
15 XI I Sub system clock input terminal (32.768 kHz)
XO O
16 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")
LCDSO
18 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
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"
27 NIL I Not used (fixed at "L")
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 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)
Description
24
Pin No. Pin Name I/O
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)
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
METAL control in/out terminal
At initial mode: valid/invalid selection input of METAL function (valid at "L" input)
54 MTLON O
At normal mode: METAL on/off control signal output to the CXA2509AQ (IC301)
(METAL on at "H" output)
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 I/O Dolby control in/out terminal Not used (pull down)
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 I
4VPRE 4V PREOUT setting terminal "L": 4V PREOUT on Fixed at "H" in this set
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 I
FLASH_W
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)
Setting terminal for the illumination color
76 COLSEL I
"L": amber, "H": green Fixed at "L" in this set
VCO shift control signal output to the FM/AM tuner unit (TU1) for SW
77 SWSHIFT O
"L": EXCEPT SW, "H": SW
DOORSW I
78 Front panel open/close detection signal input "L" is input when the front panel is closed
LED drive signal output of the MD disc slot illumination and Z indicator (LED810, LSW810)
79 DOORIND O
"H": LED on "H" is output to turn on the LED when front panel is opened
RE IN1, RE IN0
80, 81 I Dial pulse input of the rotary encoder (RE501) (for VOLUME control)
A/D converter power control signal output terminal
82 XKEYON 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
(IC501) "H": power on
Rotation detection signal input from supply reel sensor and take-up reel sensor on the mechanism
84 REL I
deck
24
Description