System Control Ic Pin Description (Mb-97 Board Ic501 Mb89094Pf-G-154-Bnd) - Sony MDP-V10 Service Manual

6-3. SYSTEM CONTROL IC PIN DESCRIPTION
(MB-97 BOARD IC501 MB89094PF-G-154-BND)
Pin No. Pin Name
1 –––––
2
CLK32K
3
GND
4
GND
5 2FSC
6
–––––
7
–––––
8
XMRST
9 XFREQ
10
FQACK
11
FQSEL
12
JPCTL
13
SP LOCK
14
TBC HOLD IN
15
SCOR
16
XPB V
17 XREF V
18
ALT
19
BLT
20
XBUSY
21
DOP
22
VTM
23
FLAG
24
CDG MODE
25
CLS CS
26 SPDL PLS
27
CLT
28
+5V
29
CLS DT
30 SET DT
31
SET CK
32
SPDL FG1
33
G MUTE
34 LD SEARCH
35
SPDL F/XR
36
AUX
37
1TJ
38 FG START
39
FG SEARCH
40
SP GAIN
I/O
Clock 32 kHz (Not used)
O
Clock 32 kHz
I
Ground
–
Ground
–
Clock 2 fsc (7.159 MHz)
I
Clock 2 fsc (Not used)
O
Ground
–
Mechanism controller reset ("L": Reset)
I
Phillips code (Frame No.) read enable
I
Phillips code/SubQ (Subcode) data output control ("H": Data output)
O
Phillips code/SubQ data selection ("L": SubQ)
O
One track jump (1TJ)/Multi track jump (MTJ) selection signal ("H": 1TJ)
O
Spindle servo lock signal ("H": Spindle servo locked)
I
Chroma TBC control signal
O
"H" when subcode sync is detected.
I
Playback V sync signal input
I
Reference V sync signal input
I
Latches internal register A of extension output port IC (MB-97 board IC502)
O
Latches internal register B of extension output port IC (MB-97 board IC502)
O
Communication enable signal from the mode controller ("L": Communication enable)
I
VIDEO dropout detection input
I
Servo processor V timing signal
I
Reference line operation flag
I
"H" when CDG. (Decode IC disc discrimination) (Not used)
I
Chip select of CLS DT (pin 29) signal
O
Spindle pulse drive signal ("H": Spindle free running)
O
CLD register latch
O
Input of the start mode selection after reset release (+5V PULL UP)
I
CLV scanning V sync phase difference data input from IC502 (Data input when CLS CS is "H".)
I
Serial data output to DSP/Extension output port IC
O
Serial data transfer clock to DSP, IC502
O
Spindle FG input 1 (12 waves per one rotation)
I
Gray image mute control output when CLV scanning ("L": Playback image, "H": Gray image)
O
Spindle servo control output ("H": During LD search)
O
Spindle rotation direction signal ("H": FWD)
O
"H": External input, "L": Others (Not used)
O
Track jump trigger pulse output
O
H sync measuring start
O
During LD search, H
O
H sync measuring prohibition
O
Function
6-6