Sony MZ-R701 Service Manual - Page 25

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Sony MZ-R701 Service Manual
• IC801 CXD2674-204GA (SYSTEM CONTROLLER, DIGITAL SIGNAL PROCESSOR, 16M BIT D-RAM)
Pin No.
Pin Name
1
PAUSE KEY
2
MIC SENSE
3
XTEST
4, 5
NC
6
MCUVDD0
7
MIFVSS3
8
XRST
9
S MON
10
VB MON
11
CHG MON
12
VREF MON
13, 14
SET KEY 1, 2
15
STOP
16
HIDC MON
17
PLAY
18
REC KEY
19
HALF LOCK SW
20
RMC KEY
21
AVDD
22
AVSS
23
VDIOSC
24
OSCI
25
OSCO
26
VSIOSC
27
DAVDD
28
VREFL
29
AOUTL
30
AOUTR
31
VREFR
32
DAVSS
33
ASYO
34
ASYI
35
AVD1
36
BIAS
37
RFI
38
AVS1
39
PCO
40
PDO
41
FILI
42
FILO
43
CLTV
44
PEAK
45
BOTM
46
ABCD
47
FE
48
AUX1
49
VC
50
ADIO
51
ADRT
I/O
I
PAUSE key signal input terminal (A/D input)
Control signal output to the microphone amp
O
"H": HIGH, "L": LOW, normally: "H"
I
Input terminal for the test mode set up
O
Not used (open)
—
Power supply terminal (for microcomputer block) (+1.5 V)
—
Ground terminal (for microcomputer I/F)
I
System reset signal input terminal from the power control (IC901) "L": reset
I
Servo signal monitor input terminal (A/D input) from RF amp (IC501)
I
Voltage monitor input terminal of UNREG power supply (A/D input)
I
Charge voltage monitor input terminal (A/D input) from XPC18A22AFCR2 (IC601)
I
Clear reference voltage input terminal (A/D input) from RF amp (IC501)
I
Set key signal input terminal (A/D input)
I
STOP key signal input terminal (A/D input) Not used (open)
I
HIGH DC voltage monitor input terminal (A/D input)
I
PLAY key signal input terminal (A/D input)
I
REC key signal input terminal (A/D input)
HALF LOCK switch (S805) signal input terminal (A/D input)
I
"L": when normal position, "H": when locked
I
Key input terminal (A/D input) of the remote commander attached headphone
—
Power supply terminal (for the analog circuit block) (+2.8 V)
—
Ground terminal (for the analog circuit block)
—
Power supply terminal (for OSC cell) (+2.4 V)
I
System clock (45.1584 MHz) input terminal
O
System clock (45.1584 MHz) output terminal
—
Ground terminal (for OSC cell)
—
Power supply terminal (for the built-in D/A converter) (+2.4 V)
I
Reference voltage input terminal (for the internal D/A converter L-CH)
O
Built-in D/A converter (L-CH) output terminal
O
Built-in D/A converter (R-CH) output terminal
I
Reference voltage input terminal (for the built-in D/A converter R-CH)
—
Ground terminal (for the built-in D/A converter)
O
Playback EFM duplex signal output terminal
I
Playback EFM comparison slice level input terminal
—
Ground terminal (for the analog) (+2.4 V)
I
Bias input for the playback EFM comparison
I
Playback EFM RF signal input from RF amp (IC501)
—
Ground terminal (for the analog)
O
Phase comparison output for the master clock of playback EFM system master PLL
O
Phase comparison output for the analog PLL Not used (open)
I
Filter input for the master clock of the playback EFM system master PLL
O
Filter output for the master clock of the playback EFM system master PLL
I
Internal VCO control voltage input for the playback EFM system master PLL
I
Peak hold signal input of the light amount signal (RF/ABCD) from RF amp (IC501)
I
Bottom hold signal input of the light amount signal (RF/ABCD) from RF amp (IC501)
I
Light amount signal (ABCD) input from RF amp (IC501)
I
Focus error signal input from RF amp (IC501)
I
Support signal (I
signal/temperature signal) input terminal (A/D input)
3
I
Middle point voltage (+1.2 V) input terminal
O
Monitor output of A/D converter input signal Not used (open)
I
A/D converter the upper limit voltage input (fixed at "H" in this set)
MZ-R701/R701DPC
Description
Not used (open)
"L": test mode (normally, fixed at "H")
25