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4.4 INTRODUCTION OF IC
TSUM1PFR-LF(U401):
integrate ADC, OSD, SCALER, MCU, LVDS, convert analog
RGB into digital and room and shrink scaling output to LCD panel.
PIN Function:
Pin Symbol
Description
21
SDO
SPI flash serial data output
22 CSZ
SPI
flash
chip
select
23 SCK
SPI
flash
serial
select
24
SDI
SPI flash serial data input
18
DDCA_SDA/RS232_TX DDC Data for analog interface/
UART Ttransmitter /
General Purpose Input/Output; 4mA driving strength
19
DDCA_SCL/RS232_RX DDC Clock for analog interface/
UART Receiver /
General Purpose Input/Output; 4mA driving strength
54
RST
Chip reset; High reset
52 VCTRL
Regulator
control
16
HSYNCO
Analog HSYNC input
17 VSYNCO
Analog
VSYNC
input
15
REFP
Internal ADC top de-coupling pin
14
REFM
Internal ADC bottom de-coupling pin
4
REXT
External resistor 390 ohm to AVDD_33
Chip Configuration Input
MODE[1:0] Chip
Operation
32
、
31 MODE[1
:
0]
Input
00 Normal
Operation
1
XIN
Xin; Crystal Oscillator Input
2
XOUT
Xout; Crystal Oscillator Output
6
AVDD
_
33
ADC Power 3.3V
51
VDDP
Digital Output Power 3.3V
30
、
53
VDDC
Digital Core Power 1.8V
3
、
5
、
29
GND Ground
Summary of Contents for va1616w-8
Page 9: ... 9 3 Front Panel Function Controls And Indicators ...
Page 18: ... 18 ...
Page 23: ... 23 ...
Page 37: ... 37 ...
Page 38: ... 38 Sep2 Inpute the S N and execute Enter ...
Page 39: ... 39 ...
Page 40: ... 40 Sep3 Key the Enter and write the data ...
Page 41: ... 41 Sep4 If ddc program OK and show data compare ok ...
Page 42: ... 42 5 7 Packing Procedure ...
Page 43: ... 43 6 Troubleshooting Flow Chart ...
Page 54: ... 54 ViewSonic Corporation Confidential Do Not Cop VA1616w MAIN BOARD PCB BUTTON VIEW ...
Page 56: ... 56 9 3 KEY BOARD TOP VIEW KEY BOARD BUTTON VIEW ...
Page 57: ... 57 10 Exploded Diagram And Spare Parts List ...
Page 59: ... 59 Packing For Shipping ...