Sony XR-C7200R Service Manual ▷ View online
– 21 –
6-1.
IC PIN FUNCTION DESCRIPTION
SECTION 6
DIAGRAMS
•
MAIN BOARD IC101 MN1884820Y5F1 (TUNER/TAPE DECK SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Function
1 to 6
NCO
O
Not used (open)
7
VDD
—
Power supply terminal (+5V)
8
X1
I
Main system clock input terminal (8 MHz)
9
X2
O
Main system clock output terminal (8 MHz)
10
GND
—
Ground terminal
11
XI
I
Sub system clock input terminal Not used (fixed at “L”)
12
NCO
O
Not used (open)
13
XO
O
Sub system clock output terminal Not used (open)
14
RESET
I
System reset signal input from the system controller (IC501), reset signal generator (IC551) and
reset switch (S551) “L” is input for several 100 msec after power on, then it changes to “H”
reset switch (S551) “L” is input for several 100 msec after power on, then it changes to “H”
15
RDSCKI
I
Serial data reading clock signal input from the RDS decoder (IC150)
16
BU IN
I
Battery detect signal input from the SONY bus interface (IC571) and battery check circuit
“H”: battery on
“H”: battery on
17
BUSON
I
Bus on/off control signal input from the system controller (IC501) (for SONY bus)
“L”: bus on
“L”: bus on
18
POS3
I
19
POS2
I
20
POS1
I
21
POS0
I
22
NIL
I
Not used (fixed at “L”)
23
MTLIN
I
Auto METAL detect signal input from the METAL detect switch on the mechanism block
24
AMSIN
I
Whether a music is present or not from CXA2510AQ (IC210) is detected at auto music sensor
“L”: music is present, “H”: music is not present
“L”: music is present, “H”: music is not present
25
TAPIN
I
Not used (fixed at “L”)
26
DOLON
I/O
27
NCO
O
Not used (open)
28
TAPMUT
O
Tape muting on/off control signal output to the CXA2510AQ (IC210) “H”: tape muting on
29
MTLON
O
METAL on/off control signal output to the CXA2510AQ (IC210) “H”: METAL on
30
RDSSI
I
Serial data input from the RDS decoder (IC150)
31
NIL
I
Not used (fixed at “L”)
32
CM-ON
O
Capstan/reel motor (M901) drive signal output terminal “H”: motor on
33
TAP-ON
O
Tape system power supply on/off control signal output terminal “H”: tape on
34
LMEJ
O
Loading/tape operation motor control signal output to the LB1638M (IC201)
(For the eject direction and reverse side operation) *1
(For the eject direction and reverse side operation) *1
35
LMLOD
O
Loading/tape operation motor control signal output to the LB1638M (IC201)
(For the loading direction and forward side operation) *1
(For the loading direction and forward side operation) *1
36
NIL
I
Not used (fixed at “L”)
37
REEL
I
Reel table rotation detect signal input from the take-up and supply reel sensor
38
PLL-DI
I
PLL serial data input from the FM/AM PLL (IC10)
39
PLL-DO
O
PLL serial data output to the FM/AM PLL (IC10)
40
PLL-CLK
O
PLL serial data transfer clock signal output to the FM/AM PLL (IC10)
41
CE
O
PLL serial chip enable output to the FM/AM PLL (IC10)
42
RQ
O
Communication request signal output to the SONY bus interface (IC571)
43
LINK-OFF
O
Unilink on/off control signal output (for SONY bus) “L”: link on
Tape position detect input from the tape operation switch on the mechanism block
Dolby control in/out terminal
At initial mode: valid/invalid selection input of dolby function (“L” input: valid)
At normal mode: dolby on/off control signal output to the CXA2510AQ (IC210)
“H”: dolby on
At initial mode: valid/invalid selection input of dolby function (“L” input: valid)
At normal mode: dolby on/off control signal output to the CXA2510AQ (IC210)
“H”: dolby on
– 22 –
Pin No.
Pin Name
I/O
Function
44
SCK
I
Serial data reading clock signal input from the system controller (IC501) (for SONY bus)
45
SI
I
Serial data input from the SONY bus interface (IC571)
46
SO
O
Serial data output to the SONY bus interface (IC571)
47
VDD
—
Power supply terminal (+5V)
48
AVDD
—
Power supply terminal (+5V) (for A/D converter)
49
VREF
I
Reference voltage input terminal (+5V) (for A/D converter)
50 to 52
NIL
I
Not used (fixed at “L”)
53
MUTE-SEL
I
Setting terminal for the muting selection (fixed at “L”)
54
DIST-SEL1
I
Destination setting terminal (fixed at “L”)
55
DIST-SEL0
I
Destination setting terminal (fixed at “L”)
56
S-METER (AM)
I
AM signal meter voltage detection input from the FM/AM tuner unit (TU10)
57
S-METER (FM)
I
FM signal meter voltage detection input from the FM/AM tuner unit (TU10)
58 to 60
NIL
I
Not used (fixed at “L”)
61
MODE2
O
Tuner system power supply on/off control signal output to the BA3918 (IC601) “H”: tuner on
62
NCO
O
Not used (open)
63
RECEIVE
O
Seek control signal output to the FM/AM tuner unit (TU10)
64
BST-ON
O
Bass-boost control signal output to the power amplifier (IC701) “H”: bass-boost on
65
MODE1
O
FM system power supply on/off control signal output to the BA3918 (IC601) “H”: FM on
66
TUNER-MUTE
O
FM and AM signal muting on/off control output “H”: muting on
67
AF-SEEK
O
AF seek control signal output terminal Not used (pull down)
68
NCO
O
Not used (open)
69
—
I
Not used (fixed at “H”)
70
ST-IN/MONO
I/O
71
SD-IN
I
Station detector detect input from the FM/AM tuner unit (TU10)
Stop level for SEEK, BTM, etc. is determined SD is present at input of “H”
Stop level for SEEK, BTM, etc. is determined SD is present at input of “H”
72
NCO
O
Not used (open)
73
FWD/REV
O
Forward/reverse direction control signal output to the CXA2510AQ (IC210)
“H: reverse direction, “L”: forward direction
“H: reverse direction, “L”: forward direction
74
AMSON
O
Tape auto music sensor control signal output to the CXA2510AQ (IC210)
“L” is output to lower the gain for audio level at FF/REW
“L” is output to lower the gain for audio level at FF/REW
75 to 80
NCO
O
Not used (open)
Input of FM stereo detection signal from FM/AM tuner unit (TU10), and output of forced
monaural control signal to FM/AM tuner unit (TU10) (Commonly used for stereo display input
and forced monaural output)
FM stereo detection at input of “L”, forced monaural at output of “L”
monaural control signal to FM/AM tuner unit (TU10) (Commonly used for stereo display input
and forced monaural output)
FM stereo detection at input of “L”, forced monaural at output of “L”
*1 loading/tape operation motor control
MODE
TERMINAL
LMLOD (pin #∞)
“L”
“H”
“L”
“H”
LMEJ (pin #¢)
“L”
“L”
“H”
“H”
STOP
LOADING/
FORWARD
EJECT/
REVERSE
BRAKE
– 23 –
•
MAIN BOARD IC501
µ
PD78058GC-462-3B9 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Function
1
RC-IN0
I
Rotary remote commander shift key A/D input terminal
2
ILL-IN
I
Dimmer detection signal input Dimmer is present at input of “L”
3
NIL
I
Not used (fixed at “L”)
4
AVSS
—
Ground terminal (for A/D converter)
5
LCDANG
O
Output signal for the LCD view angle adjustment
6
NIL
I
Not used (fixed at “L”)
7
AVREF1
I
Reference voltage (+5V) input terminal (for D/A converter)
8
RE IN0
I
Rotary encoder (RE701) input terminal
9
RE IN1
I
Rotary encoder (RE701) input terminal
10
SUB-F
O
Sub-woofer control signal output terminal Not used (pull down)
11
COLSEL
I
Input terminal to set whether the illumination color change function is present or not
“L”: illumination color change function is present (fixed at “L” in this set)
“L”: illumination color change function is present (fixed at “L” in this set)
12
LCDSO
O
Serial data output to the liquid crystal display driver (IC701)
13
LCDCKO
O
Serial data transfer clock signal output to the liquid crystal display driver (IC701)
14
LCDCE
O
Chip enable output to the liquid crystal display driver (IC701)
15
LCDINH
O
Blank indicate control signal output to the liquid crystal display driver (IC701)
“L”: no display
“L”: no display
16
UNISI
I
Serial data input from the SONY bus interface (IC571)
17
UNISO
O
Serial data output to the SONY bus interface (IC571)
18
UNICKI
I
Serial data reading clock signal input terminal (for SONY bus)
19
UNICKO
O
Serial data transfer clock signal output to the tuner/tape deck system controller (IC101) and
SONY bus interface (IC571)
SONY bus interface (IC571)
20
BUSON
O
Bus on/off control signal output to the tuner/tape deck system controller (IC101) and SONY bus
interface (IC571) “L”: bus on
interface (IC571) “L”: bus on
21
SYSRST
O
Reset signal output to the tuner/tape deck system controller (IC101) and SONY bus interface
(IC571) “L”: reset
(IC571) “L”: reset
22
AMPON
O
Standby control signal output to the power amplifier (IC701) “L”: standby
23, 24
NCO
O
Not used (open)
25
PW-ON
O
Main system power supply on/off control signal output to the BA3918 (IC601) “H”: power on
26
ILL-ON
O
27
COLOR
O
Illumination color selection signal output “H”: amber, “L”: green
28
NCO
O
Not used (open)
29 to 32
NIL
I
Not used (fixed at “L”)
33
GND
—
Ground terminal
34, 35
NIL
I
Not used (fixed at “L”)
36 to 39
NCO
O
Not used (open)
40
AD-ON
O
Power supply on/off control signal output for the A/D converter “L”: power on
41
NCO
O
Not used (open)
42
PW-SEL
I
Power select switch (S501) input terminal
“L”: position A or off (halt mode), “H”: position B or on (operation mode)
“L”: position A or off (halt mode), “H”: position B or on (operation mode)
43
RC-IN1
I
Rotary remote commander shift key A/D input terminal
44
TEST
I
Setting terminal for the test mode “L”: test mode (normally fixed at “H”)
45
EQ-SEL
I
Equalizer selection input terminal (fixed at “H”)
46
BEEP
O
Beep sound drive signal output terminal
Power supply on/off control signal output terminal at the illumination and liquid crystal display
driver (IC701) “H”: power on
At power select switch (S501) on mode: “H” output at the accessory on
At power select switch (S501) off mode: “H” output at the power on
driver (IC701) “H”: power on
At power select switch (S501) on mode: “H” output at the accessory on
At power select switch (S501) off mode: “H” output at the power on
– 24 –
Pin No.
Pin Name
I/O
Function
47
MUT
O
Muting control signal output to the line muting circuit and power amplifier (IC701)
“H”: muting on
“H”: muting on
48
VOLCE
O
Chip enable signal output to the electrical volume (IC301)
49
NCO
O
Not used (open)
50
VOLCKO
O
Serial data transfer clock signal output to the electrical volume (IC301)
51
NCO
O
Not used (open)
52
VOLSO
O
Serial data output to the electrical volume (IC301)
53 to 56
NCO
O
Not used (open)
57
DIMMER
O
Dimmer control signal output terminal
58, 59
NCO
O
Not used (open)
60
RESET
I
System reset signal input from the reset signal generator (IC551) and reset switch (S551)
“L” is input for several 100 msec after power on, then it changes to “H”
“L” is input for several 100 msec after power on, then it changes to “H”
61
SIRCS
I
Sircs signal input from the remote control receiver (IC702)
62
BU-IN
I
Battery detect signal input from the SONY bus interface (IC571) and battery check circuit
“H”: battery on
“H”: battery on
63
DOORSW
I
Door open/close detect input “L”: door close
64
ACCIN
I
Accessory detect signal input terminal “L”: accessory on
65
NOSESW
I
Detects the removal of the attaching and removing type front panel block “L”: attaching
66
TELMUT
I
Telephone muting signal input terminal At input of “L”, the signal is attenuated by –20 dB
67
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” (fixed at “H” in this set)
and eject keys in the power off status On at input of “H” (fixed at “H” in this set)
68
VDD
—
Power supply terminal (+5V)
69
OSCOUT
O
Main system clock output terminal (5 MHz)
70
OSCIN
I
Main system clock input terminal (5 MHz)
71
GND
—
Ground terminal
72
XT-OUT
O
Sub system clock output terminal (32.768 kHz)
73
XT-IN
I
Sub system clock input terminal (32.768 kHz)
74
AVDD
—
Power supply terminal (+5V) (for A/D converter)
75
AVREF0
I
Reference voltage input terminal (+5V) (for A/D converter)
76
KEYIN0
I
77
KEYIN1
I
Key input terminal (A/D input)
6, DSPL, LIST, 10, 9, 8, 7, 6, 5 keys input
(LSW800, LSW711, LSW712 and LSW715 to LSW720)
78
KEYSEL0
I
Setting terminal for the key function select (fixed at “L”)
79
KEYSEL1
I
Setting terminal for the key function select (fixed at “H”)
80
DESTSEL
I
Destination setting terminal (fixed at “L”)
Key input terminal (A/D input)
OFF, SOURCE, –
OFF, SOURCE, –
= 0 SEEK/AMS, MODE *, + + ) SEEK/AMS, SOUND,
SHIFT, 1, 2, 3, 4 keys input (LSW700 to LSW710)
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