DVR-5070
8
CIRCUIT DESCRIPTION
Port No.
Port Name
I/O
Function
1,2
VCC1,2
-
VCC
2,6,9
VIN,VIN (1,2)
I
Video input (Composite or Y)
3
YC MIX
-
YC MIX select (Unused)
4
CIN
I
Croma input (Open)
5
CLP
-
Clamp select (Connected to GND)
7,8
MUTE (1,2)
O
Mute select (Unused)
10
GND
-
GND
11,13
CbIN, CrIN
I
Component input
12
Dual/Single
-
Power select (+5V)
14,15,19,
21,22,24
VEE1, VEE2
-
VEE (-5V)
16,18,20, CrOUT, CbOUT, YOUT2,
23,25,27
YOUT1, COUT,VOUT
O
Video output
23,25,27
YOUT1, COUT,VOUT
O
Video output (Open)
17,26
PS2,PS1
-
Power save (Connected to GND)
3. Port Description of Ics
3-1 Video Driver : MM1540AF (U1)
Port No.
Port Name
I/O
Description
1
BCK
I
Audio data bit clock input.
2
DATA
I
Audio data digital input.
3
LRCK
I
L-channel and R-channel Audio data latch enable input.
4
DGND
-
Digital groung.
5
VDD
-
Digital power supply (+3.3V).
6
VCC
-
Analog power supply (+5.0V).
7
VOUTL
O
Analog output for L-channel.
8
VOUTR
O
Analog output for R-channel.
9
AGND
-
Analog ground.
10
VCOM
-
Common voltage decoupling.
11
ZEROR/ZEROA
O
Zero flag output for R-channel /Zero flag output for L/R channel. (Unused)
12
ZEROL/NA
O
Zero flag output for L-channel /No assign. (Unused)
13
MD
I
Mode control data input.
14
MC
I
Mode control clock input.
15
ML
I
Mode control latch input.
16
SCK
I
System clock input.
3-2 Digital to Analog Converter : PCM1748 (DVD PCB)
