Datasheet

LMH0031
www.ti.com SNLS218A –JANUARY 2006–REVISED APRIL 2013
4. Toggle A
CLK
.
5. Present 343h to AD[9:0] as the register data (525 line, 30 frame, 27MHz, NTSC 4x3, colour bars (SMPTE
125M)).
6. Toggle A
CLK
.
7. The PASS/FAIL indicator, TEST 0 register, Bit 7, should be read for the result of the test. Alternatively, this
bit may be mapped to a convenient bit of the Multi-function I/O bus. The test pattern data and clock is
available at the DV[19:0] and V
CLK
outputs.
CONFIGURATION AND CONTROL REGISTERS
The configuration and control registers store data which determines the operational modes of the LMH0031 or
which result from its operation. Many of these registers may be assigned as external I/O functions which are then
available on the multi-function I/O bus. These functions are summarized in Table 1 and detailed in Table 2. The
power-on default condition for the multi-function I/O port is indicated in Table 1 and detailed in Table 6.
Table 1. Configuration and Control Data Register Summary
(1)
Available on
Register Function Bits Read or Write Initial Condition Notes
I/O Bus
EDH and CRC Operations
CRC Error (SD/HD) 1 R Reset Output See
(2)
I/O 5
CRC Error Luma 1 R Reset Output
CRC Error Chroma 1 R Reset Output
CRC Replace 1 R/W OFF No See
(3)
Full-Field Flags 5 R Reset No
Active Picture Flags 5 R Reset No
ANC Flags 5 R Reset No
EDH Force 1 R/W OFF Input
EDH Enable 1 R/W ON Input
F/F Flag Error 1 R Reset Output
A/P Flag Error 1 R Reset Output
ANC Flag Error 1 R Reset Output
Ancillary Data Operations
ANC Checksum Force 1 R/W OFF Input
ANC Checksum Error 1 R Reset Output
ANC FIFO Empty 1 R Set Output See
(2)
I/O 6
ANC FIFO 90% Full 1 R Reset Output
ANC FIFO Full 1 R Reset Output
ANC FIFO Overrun 1 R Reset Output
ANC ID 16 R/W 0000h No
ANC Mask 16 R/W FFFFh No
MSG Track 1 R/W OFF No
MSG Flush Static 1 R/W OFF No
FIFO Flush Static 1 R/W OFF No
Full MSG Available 1 R OFF Output
Short MSG Detect 1 R OFF Output
FIFO Clock Enable 1 R/W OFF No
FIFO Extract Enable 1 R/W OFF Input
Video FIFO Operation
Video FIFO Depth 3 R/W 000b No
(1) ON = SET = logic-1, OFF = RESET = logic-0 (positive logic).
(2) Connected to multifunction I/O port at power-on.
(3) Special or restricted functionality. Refer to text for details.
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