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Video Port Pin Mapping
1-13OverviewSPRU629
1.4 Video Port Pin Mapping
The video port requires 21 external signal pins for full functionality. Pin usage
and direction changes depend on the selected operating mode. Pin functional-
ity detail for video capture mode is listed in Table 1–1. Pin functionality detail
for video display mode is listed in Table 1–2. All unused port signals (except
VCLK1 and VCLK2) can be configured as general-purpose I/O (GPIO) pins.
Table 1–1. Video Capture Signal Mapping
Usage
BT.656 Capture Mode Raw Data Capture Mode
Video Port
Signal
I/O
Dual
Channel
Single
Channel
Y/C Capture
Mode
8/10-Bit
16/20-Bit
TSI Capture
Mode
VDATA[9–0]
I/O VDIN[9–0]
(In) Ch A
VDIN[9–0]
(In) Ch A
VDIN[9–0]
(In) (Y)
VDIN[9–0]
(In) Ch A
VDIN[9–0]
(In)
VDIN[7–0]
(In)
VDATA[19–10]
I/O VDIN[19–10]
(In) Ch B
Not Used VDIN[19–10]
(In) (Cb/Cr)
VDIN[19–10]
(In) Ch B
VDIN[19–10]
(In)
Not Used
VCLK1
I VCLKINA (In) VCLKINA (In) VCLKINA (In) VCLKINA (In) VCLKINA (In) VCLKINA (In)
VCLK2
I/O VCLKINB (In) Not Used Not Used VCLKINB (In) Not Used Not Used
VCTL1
I/O CAPENA
(In)
CAPENA/
AVID/HSYNC
(In)
CAPENA/
AVID/HSYNC
(In)
CAPENA
(In)
CAPENA
(In)
CAPENA
(In)
VCTL2
I/O CAPENB
(In)
VBLNK/
VSYNC (In)
VBLNK/
VSYNC (In)
CAPENB
(In)
Not Used PACSTRT
(In)
VCTL3
I/O Not Used FID
(In)
FID
(In)
FID (In)
Ch A
FID (In)
Ch A
PACERR
(In)
Legend: VCLKINA – Channel A capture clock; CAPENA – Channel A capture enable; VCLKINB – Channel B capture clock;
CAPENB – Channel B capture enable; AVID – Active video; HSYNC – Horizontal synchronization; VBLNK – Vertical
blanking; VSYNC – Vertical synchronization; FID – Field identification; PACSTRT – Packet start; PACERR – Packet
error