Functional Description
2.11.2AFE Gain Control Register
Subaddress |
| 01h |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Default |
| 0Fh |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
7 |
| 6 |
|
| 5 | 4 | 3 | 2 | 1 | 0 |
|
|
|
|
|
|
|
|
|
| |
|
|
| Reserved |
| 1 | 1 | AGC chroma | AGC luma |
Bit 3: 1 must be written to this bit.
Bit 2: 1 must be written to this bit.
AGC chroma enable: Controls automatic gain in the chroma/PbPr channel:
0 = Manual (if AGC luma is set to manual, AGC chroma is forced to be in manual)
1 = Enabled auto gain, applied a gain value acquired from the sync channel for
AGC luma enable: Controls automatic gain in the embedded sync channel of CVBS,
0 = Manual gain, AFE coarse and fine gain frozen to the previous gain value set by AGC when this bit is set to 0.
1 = Enabled auto gain applied to only the embedded sync channel (default)
These settings only affect the analog
2.11.3Video Standard Register
Subaddress |
|
| 02h |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Default |
|
| 00h |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7 |
|
|
| 6 |
|
| 5 |
| 4 |
| 3 | 2 |
| 1 |
| 0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
| Reserved |
|
|
|
| Video standard [2:0] |
| ||||
Video standard [2:0]: |
|
|
|
|
|
|
|
|
|
| ||||||
|
|
|
| CVBS and |
|
|
| Component Video |
| |||||||
| 000 | = Autoswitch mode (default) | Autoswitch mode (default) |
|
|
|
| |||||||||
| 001 | = (M, J) NTSC |
| Component 525 |
|
|
|
|
| |||||||
| 010 | = (B, D, G, H, I, N) PAL |
| Component 625 |
|
|
|
|
| |||||||
| 011 | = (M) PAL |
|
|
| Reserved |
|
|
|
|
| |||||
| 100 | = |
| Reserved |
|
|
|
|
| |||||||
| 101 | = NTSC 4.43 |
|
|
| Reserved |
|
|
|
|
| |||||
| 110 | = SECAM |
|
|
| Reserved |
|
|
|
|
| |||||
| 111 | = PAL 60 |
|
|
| Reserved |
|
|
|
|
|
With the autoswitch code running, the user can force the decoder to operate in a particular video standard mode by writing the appropriate value into this register. Changing these bits causes the register settings to be reinitialized.
32 | TVP5147M1PFP |