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ViewSonic Corporation
Confidential - Do Not Cop VX2262wm/wmp
4.4 INTRODUCTION OF IC
TSUMO58CWHL-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
41 SDO SPI flash serial data output
42 CSZ SPI flash chip select
43 SCK SPI flash serial select
44 SDI SPI flash serial data input
34 DDCA_SDA/RS232_TX DDC Data for analog interface/
UART Ttransmitter /
General Purpose Input/Output;
4mA driving strength
35 DDCA_SCL/RS232_RX DDC Clock for analog interface/
UART Receiver /
General Purpose Input/Output;
4mA driving strength
5 DDCD_SDA DDC Data and HDCP Slave Serial
Port Data for DVI/HDMI Interface;
4mA driving strength
6 DDCD_SCL DDC Clock and HDCP Slave
Serial Port Data for DVI/HDMI
Interface
102 BYPASS For External Bypass Capacitor
108 RST Chip reset; High reset
103 VCTRL Regulator control
32 HSYNCO Analog HSYNC input
33 VSYNCO Analog VSYNC input
31 REFP Internal ADC top de-coupling pin
30 REFM Internal ADC bottom de-coupling
pin
7 REXT External resistor 390 ohm to
AVDD_33
37 MODE Chip Configuration Input; 10K
ohm pull-low for normal operation
128 XIN Xin; Crystal Oscillator Input
127 XOUT Xout; Crystal Oscillator Output
8,12,20
AVDD＿33
ADC Analog Power 3.3V
21
AVDD＿18
ADC Analog Power 1.8V
40,54,58-60,65,66,71,87,107
112,114
VDDP Digital Output Power 3.3V
53,74,104,126 VDDC Digital Core Power 1.8V
1,11,17,29,52,62,63,68,69,72,
88,101,105,106,113
GND Ground
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