DVR-5070
CIRCUIT DESCRIPTION
3. Port Description of Ics
3-1 Video Driver : MM1540AF (U1)
Port No.Port NameI/OFunction
1,2VCC1,2-VCC
2,6,9VIN,VIN (1,2)IVideo input (Composite or Y)
3YC MIX-YC MIX select (Unused)
4CINICroma input (Open)
5CLP-Clamp select (Connected to GND)
7,8MUTE (1,2)OMute select (Unused)
10GND-GND
11,13CbIN, CrINIComponent input
12Dual/Single-Power select (+5V)
14,15,19,
VEE1, VEE2-VEE (-5V)
21,22,24
16,18,20, CrOUT, CbOUT, YOUT2,
OVideo output
23,25,27YOUT1, COUT,VOUT
23,25,27YOUT1, COUT,VOUTOVideo output (Open)
17,26PS2,PS1-Power save (Connected to GND)
3-2 Digital to Analog Converter : PCM1748 (DVD PCB)
Port No.Port NameI/ODescription
1BCKIAudio data bit clock input.
2DATAIAudio data digital input.
3LRCKIL-channel and R-channel Audio data latch enable input.
4DGND-Digital groung.
5VDD-Digital power supply (+3.3V).
6VCC-Analog power supply (+5.0V).
7VOUTLOAnalog output for L-channel.
8VOUTROAnalog output for R-channel.
9AGND-Analog ground.
10VCOM-Common voltage decoupling.
11ZEROR/ZEROAOZero flag output for R-channel /Zero flag output for L/R channel. (Unused)
12ZEROL/NAOZero flag output for L-channel /No assign. (Unused)
13MDIMode control data input.
14MCIMode control clock input.
15MLIMode control latch input.
16SCKISystem clock input.
8 |
ACEC
