LMH0031 Datasheet, PDF (19/39 Pages) National Semiconductor (TI) – SMPTE 292M/259M Digital Video Deserializer Descrambler with Video and Ancillary Data FIFOs

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⁾
Register Function
EDH and CRC Operations
CRC Error (SD/HD)
CRC Error Luma
CRC Error Chroma
CRC Replace
Full-Field Flags
Active Picture Flags
ANC Flags
EDH Force
EDH Enable
F/F Flag Error
A/P Flag Error
ANC Flag Error
Ancillary Data Operations
ANC Checksum Force
ANC Checksum Error
ANC FIFO Empty
ANC FIFO 90% Full
ANC FIFO Full
ANC FIFO Overrun
ANC ID
ANC Mask
MSG Track
MSG Flush Static
FIFO Flush Static
Full MSG Available
Short MSG Detect
FIFO Clock Enable
FIFO Extract Enable
Video FIFO Operation
Video FIFO Depth
Bits
Read or Write
1
R
1
R
1
R
1
R/W
5
R
5
R
5
R
1
R/W
1
R/W
1
R
1
R
1
R
1
R/W
1
R
1
R
1
R
1
R
1
R
16
R/W
16
R/W
1
R/W
1
R/W
1
R/W
1
R
1
R
1
R/W
1
R/W
3
R/W
Initial Condition
Reset
Reset
Reset
OFF
Reset
Reset
Reset
OFF
ON
Reset
Reset
Reset
OFF
Reset
Set
Reset
Reset
Reset
0000h
FFFFh
OFF
OFF
OFF
OFF
OFF
OFF
OFF
000b
Available on
I/O Bus
Output
Output
Output
No
No
No
No
Input
Input
Output
Output
Output
Input
Output
Output
Output
Output
Output
No
No
No
No
No
Output
Output
No
Input
No
Notes
See ⁽²⁾ I/O 5
See ⁽³⁾
See ⁽²⁾ I/O 6
(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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