Functional Description
2.12 VBUS Register Definitions
2.12.1VDP Closed Caption Data Register
Subaddress
80 051Ch−80 051Fh
Read only
Subaddress | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|
|
|
|
|
|
|
|
|
80 051Ch |
|
|
| Closed caption field 1 byte 1 |
|
|
| |
|
|
|
|
|
|
|
| |
80 051Dh |
|
|
| Closed caption field 1 byte 2 |
|
|
| |
|
|
|
|
|
|
|
| |
80 051Eh |
|
|
| Closed caption field 2 byte 1 |
|
|
| |
|
|
|
|
|
|
|
| |
80 051Fh |
|
|
| Closed caption field 2 byte 2 |
|
|
|
These registers contain the closed caption data arranged in bytes per field.
2.12.2VDP WSS Data Register
Subaddress
80 0520h−80 0526h
WSS NTSC (CGMS):
Read only
Subaddress | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte |
|
|
|
|
|
|
|
|
|
|
80 0520h |
|
| b5 | b4 | b3 | b2 | b1 | b0 | WSS field 1 byte 1 |
|
|
|
|
|
|
|
|
|
|
80 0521h | b13 | b12 | b11 | b10 | b9 | b8 | b7 | b6 | WSS field 1 byte 2 |
|
|
|
|
|
|
|
|
|
|
80 0522h |
|
| b19 | b18 | b17 | b16 | b15 | b14 | WSS field 1 byte 3 |
|
|
|
|
|
|
|
|
|
|
80 0523h |
|
|
| Reserved |
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
80 0524h |
|
| b5 | b4 | b3 | b2 | b1 | b0 | WSS field 2 byte 1 |
|
|
|
|
|
|
|
|
|
|
80 0525h | b13 | b12 | b11 | b10 | b9 | b8 | b7 | b6 | WSS field 2 byte 2 |
|
|
|
|
|
|
|
|
|
|
80 0526h |
|
| b19 | b18 | b17 | b16 | b15 | b14 | WSS field 2 byte 3 |
These registers contain the wide screen signaling data for NTSC.
Bits 0−1 represent word 0, aspect ratio
Bits 2−5 represent word 1, header code for word 2
Bits 6−13 represent word 2, copy control
Bits 14−19 represent word 3, CRC
PAL/SECAM:
Read only
Subaddress | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte |
|
|
|
|
|
|
|
|
|
|
80 0520h | b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 | WSS field 1 byte 1 |
|
|
|
|
|
|
|
|
|
|
80 0521h |
|
| b13 | b12 | b11 | b10 | b9 | b8 | WSS field 1 byte 2 |
|
|
|
|
|
|
|
|
|
|
80 0522h |
|
|
| Reserved |
|
|
|
| |
|
|
|
|
|
|
|
|
| |
80 0523h |
|
|
| Reserved |
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
80 0524h | b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 | WSS field 2 byte 1 |
|
|
|
|
|
|
|
|
|
|
80 0525h |
|
| b13 | b12 | b11 | b10 | b9 | b8 | WSS field 2 byte 2 |
|
|
|
|
|
|
|
|
|
|
80 0526h |
|
|
| Reserved |
|
|
|
|
PAL/SECAM:
Bits 0−3 represent group 1, aspect ratio
Bits 4−7 represent group 2, enhanced services
Bits 8−10 represent group 3, subtitles
Bits 11−13 represent group 4, others
TVP5147M1PFP | 73 |