1.7 Terminal Functions
Table 1−1. Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
Analog Video
VI_1_A
NUMBER
80
1
VI_1_x: Analog video input for CVBS/Pb/B/C
VI_1_B
VI_2_x: Analog video input for CVBS/Y/G
VI_3_x: Analog video input for CVBS/Pr/R/C
VI_4_A: Analog video input for CVBS/Y
VI_1_C
2
VI_2_A
7
VI_2_B
8
I
Up to 10 composite, 4 S-video, and 2 composite or 3 component video inputs (or a combination thereof)
can be supported.
VI_2_C
9
VI_3_A
16
17
18
23
The inputs must be ac-coupled. The recommended coupling capacitor is 0.1 µF.
VI_3_B
2
The possible input configurations are listed in the input select register at I C subaddress 00h (see
Section 2.11.1).
VI_3_C
VI_4_A
Clock Signals
DATACLK
40
74
75
O
I
Line-locked data output clock.
External clock reference input. It may be connected to an external oscillator with a 1.8-V compatible clock
signal or a 14.31818-MHz crystal oscillator.
XTAL1
XTAL2
O
External clock reference output. Not connected if XTAL1 is driven by an external single-ended oscillator.
Digital Video
57, 58,
59, 60,
63, 64,
65, 66,
69, 70
Digital video output of CbCr, C[9] is MSB and C[0] is LSB. Unused outputs can be left unconnected. Also,
these terminals can be programmable general-purpose I/O.
C[9:0]/
GPIO[9:0]
O
For the 8-bit mode, the two LSBs are ignored.
D_BLUE
D_GREEN
D_RED
FSO
58
59
60
57
I
I
I
I
Digital BLUE input from overlay device
Digital GREEN input from overlay device
Digital RED input from overlay device
Fast-switch overlay between digital RGB and any video
43, 44,
45, 46,
47, 50,
51, 52,
53, 54
Digital video output of Y/YCbCr, Y[9] is MSB and Y[0] is LSB.
Y[9:0]
O
For the 8-bit mode, the two LSBs are ignored. Unused outputs can be left unconnected.
Miscellaneous Signals
Fast-switch (blanking) input. Switching signal between the synchronous component video (YPbPr/RGB)
and the composite video input.
FSS/GPIO
35
37
I/O
I/O
Programmable general-purpose I/O
Genlock control output (GLCO). Two Genlock data formats are available: TI format and real time control
(RTC) format.
GLCO/I2CA
2
During reset, this terminal is an input used to program the I C address LSB.
INTREQ
PWDN
30
33
34
O
I
Interrupt request
Power down input:
1 = Power down
0 = Normal mode
RESETB
I
Reset input, active low
1−6
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