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Functional Description
73
SLES140A—March 2007 TVP5147M1PFP
2.12 VBUS Register Definitions
2.12.1 VDP 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.
2.12.2 VDP 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