Sony MZ-R909 Service Manual page 49

• IC801 CXD2671-206GA (SYSTEM CONTROLLER, DIGITAL SIGNAL PROCESSOR, 16M BIT D-RAM)
Pin No.
Pin Name
1 to 5
NC
6 MCUVDD0
7
MIFVSS3
8
XRST
9
S MON
10 VB MON
11
CHG MON
12 VREF MON
SET KEY 1,
13, 14
SET KEY 2
15 VL MON
16
HIDC MON
17 WK DET
18
REC KEY
HALF LOCK
19
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
I/O
—
Not used (open)
— Power supply terminal (for microcomputer block) (+1.5V)
—
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 XPC18A22FCR2 (IC601)
I Clear reference monitor voltage input terminal (A/D input) from RF amp (IC501)
I Key input terminal from the switch & LCD module (A/D input)
I VL voltage monitor input terminal (A/D input)
I
HIGH DC voltage monitor input terminal (A/D input)
I Set key start switching detection signal input terminal (A/D input)
I
REC key input terminal (A/D input)
Open button detection switch (S805) input terminal (A/D input) Input "L" when the open button
I
is pressed. Input "H" in other cases.
I
Key input terminal (A/D input) from the remote commander attached headphone
—
Power supply terminal (for the analog circuit block) (+2.8V)
—
Ground terminal (for the analog circuit block)
—
Power supply terminal (for OSC cell) (+2.4V)
I
System clock (45.1584MHz) input terminal
O
System clock (45.1584MHz) output terminal
—
Ground terminal (for OSC cell)
—
Power supply terminal (for the built-in D/A converter) (+2.4V)
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) (+2.4V)
I
Bias current input terminal for the playback EFM comparison
I Playback EFM RF signal input from RF amp (IC501)
—
Ground terminal (for the analog)
O Phase comparison output terminal for the playback EFM system master PLL
O
Phase comparison output terminal for the analog PLL Not used (open)
I Filter input terminal for the playback EFM system master PLL
O Filter output terminal for 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
Description
MZ-R909
49