ViewSonic VX712

- 18 –
ViewSonic Corporation
Confidential - Do Not Copy VX712
4.4 INTRODUCTION OF IC
RTD2523-LF(IC101): integrate ADC, OSD, SCALER, LVDS, convert analog RGB into
digital and room and shrink scaling output to LCD panel.
PIN Function:
Pin Symbol Description
1 XO Reference clock output
2 XI Reference clock input
3 DPLL_GND Ground for digital PLL
4 DPLL_VDD Power for digital PLL(3.3v)
5 APLL_VDD Power for multi-phase PLL(3.3v)
6 PLL_TEST1 Test Pin 1/IRQ#
7 PLL_TEST2 Test Pin 2/Power-on-latch for crystal
out Frequency
8 APLL_GND Ground for multi-phase PLL
9 PWM1/TMDS_TST PWM1/TMDS_TEST Pin/Power-on
latch for serial/parallel port
11、13、
19、26
TMDS_VDD 3.3V
12 EXT_RES Impedance Match Reference
14 RX2P Differential Data Input
15 RX2N Differential Data Input
17 RX1P Differential Data Input
18 RX1N Differential Data Input
20 RX0P Differential Data Input
21 RX0N Differential Data Input
23 RXCP Differential Data Input
24 RXCN Differential Data Input
51 PWM2/TCON[2]/S[3] PWM2/TCON[2]/SDIO[3]
55 PWM2/TCON[13]/COUT PWM2/TCON[13]/Crystal out
113 PWM2/TCON[12]/COUT PWM2/TCON[12]/Crystal out
47 PWM1/DDCSDA/TCON[1]/BBLU[0] PWM1/DDC serial control I/F data
input/output/TCON[4]
125 PWM1/DDCSDA2/TCON[7] PWM1/DDC serial control I/F data
input/output/TCON[7]
112 PWM0 / REFCLK PWM0(In/out)test pin for DCKL/Video
8 even-odd signal
54 SDIO[0] Serial control I/F data in/Parallel port
data[0]
53 SDIO[1]/TCON[4]/BBLU[0] Parallel port data[1]/TCON[4]/TTL
BBLU[0]
52 SDIO[2]/TCON[3]/BBLU[1] Parallel port data[2]/TCON[3]/TTL
BBLU[1]
51 SDIO[3]/PWM2/TCON[2] Parallel port data[1]/TCON[4]/PWM2
50 SCLK Serial control I/F clock