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RXD-V252/V252-H
Port No.
Port Name
52
VREF
53
VREFM
54
RSET
55
COMP
56,57,62,63
VGND
58
CDAC
59,60
VVDD
61
YDAC
64
VDAC
65
ACAP
71
XOUT
74
79
PCLK
80
2XPCLK
82
HSYN B
84
VSYN B
86~89,92
YUV(7~0)
94,96,98
Block Diagram for DAC & TV Encoder : ES3889 (ICM3)
CD-ROM
Kit
ROM
6
CIRCUIT DESCRIPTION
I/O
I
Internal resistor divider generators common mode reference(CMR) voltage.
I
DAC and ADC minimum reference.
I
Full scale DAC current adjustment.
I
Compensation pin.
I
Video analog ground.
O
Modulated chrominance output.
I
Video VCC(5V).
O
Y luminance data bus for screen video port.
O
Composite video output.
I
Audio CAP.
O
Crystal output.
XIN
I
27MHz crystal input.
I/O
13.5MHz pixel clock.
I/O
27MHz (2 times pixel clock).
O
Horizontal sync (active low).
O
Vertical sync (active low).
I
YUV data bus for screen video port.
Visba ES3880
(Video CD)
Mic 1
DRAM
Mic 2
Function
Visba ES3889
Companion Chip
CD-ROM Controller
Remote
Interrupt
Control
Control
Audio DAC
DSC
NTSC/PAL Video
PLL
Echo/Surround/Vocal Assist
Pre amp
Volume Control
Pre amp
Volume Control
Remote
Receiver
Speakers
Television
VFD
VFD
Driver
Panel
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