81 fifo read data register, 82 vbus address access register, 83 interrupt raw status 0 register – Texas Instruments TVP5147M1PFP User Manual
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Functional Description
67
SLES140A—March 2007
TVP5147M1PFP
2.11.81 FIFO Read Data Register
Subaddress
E2h
Read only
7
6
5
4
3
2
1
0
FIFO read data [7:0]
FIFO read data [7:0]: This register is provided to access VBI FIFO data through the I
2
C interface. All forms
of teletext data come directly from the FIFO, while all other forms of VBI data can be programmed to come
from registers or from the FIFO. If the host port is to be used to read data from the FIFO, then bit 0 (host access
enable) in the VDP FIFO output control register at subaddress C0h must be set to 1 (see Section 2.11.71).
2.11.82 VBUS Address Access Register
Subaddress
E8h
E9h
EAh
Default
00h
00h
00h
Subaddress
7
6
5
4
3
2
1
0
E8h
VBUS address [7:0]
E9h
VBUS address [15:8]
EAh
VBUS address [23:16]
VBUS address [23:0]: VBUS is a 24-bit wide internal bus. The user needs to program in these registers the
24-bit address of the internal register to be accessed via host port indirect access mode.
2.11.83 Interrupt Raw Status 0 Register
Subaddress
F0h
Read only
7
6
5
4
3
2
1
0
FIFO THRS
TTX
WSS
VPS
VITC
CC F2
CC F1
Line
FIFO THRS: FIFO threshold passed, unmasked
0 = Not passed
1 = Passed
TTX: Teletext data available unmasked
0 = Not available
1 = Available
WSS: WSS data available unmasked
0 = Not available
1 = Available
VPS: VPS data available unmasked
0 = Not available
1 = Available
VITC: VITC data available unmasked
0 = Not available
1 = Available
CC F2: CC field 2 data available unmasked
0 = Not available
1 = Available