54
VDDP
AP
3.3 V Power Supply for Analog PLL Clock
55
GNDP
AP
0 V Power Supply for Analog PLL Clock
56
GND2
DP
0 V Power Supply for Digital Core, DSPs & IO Cells
57
VDD2
DP
3.3 V Power Supply for Digital Core, DSPs & IO Cells
58
CKTST
I
Must be Connected to 0 V
59
N/C
Not Used
60
N/C
Not Used
61
SDO
B
I²S Bus Data Output
62
ST/SDI
B
Stereo Detection Output / I²S Bus Data Input
63
WS
B
I²S Bus Word Select Output
64
SCK
B
I²S Bus Clock Output
65
BUS1
B
I²C Bus Expander Output 1
66
N/C
Not Used
67
N/C
Not Used
68
BUS0
B
I²C Bus Expander Output 2
69
IRQ
B
I²C Status Read Request
70
N/C
Not Used
71
N/C
Not Used
72
N/C
Not Used
73
SIF
A
Sound IF Input
74
VTOP
A
ADC VTOP Decoupling Pin
75
VREFIF
A
AGC Voltage Reference Decoupling Pin
76
VDDIF
AP
3.3 V Power Supply for IF AGC & ADC
77
GNDIF
AP
0 V Power Supply for IF AGC & ADC
78
MONOIN
A
Mono Input
79
NC
Not Used
80
NC
Not Used
3.5.3 Function introduction to MST718
1. Description
The MST718BE is a high quality ASIC for NTSC/PAL/SECAM LCD-TV application. It receives analog
NTSC/PAL/SECAM CVBS and S-Video inputs from TV tuners, DVD or VCR sources, including weak and
distorted signals, as well as analog RGB input from GPS systems. Automatic gain control (AGC) and 10-bit
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