Kenwood DVR-5070 Service Manual page 8

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