ViewSonic va1616w-8 - Introduction of ICs (TSUM1 PFR)

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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