參數(shù)資料
型號: TVP5020CPFP
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: POWERPAD, PLASTIC, HTQFP-80
文件頁數(shù): 33/87頁
文件大小: 394K
代理商: TVP5020CPFP
2–25
No Latency Read Phase 2:
COMMAND PHASE
ADDRESS PHASE
DATA PHASE
(to TVP5020)
7
6
5 4 3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
No Latency Read Phase 2
0
1
1 0 0
0
1
A A A A A A A A D D D D D D D D
2.7.3.3
FIFO Status 0 Register
FIFO status 0 register returns two bits that report status and six unused bits.
7
6
5
4
3
2
1
0
FIFO Status 0
Undefined
DREQA
Undefined
VIRQ
DREQA: DMA request for FIFO A. This bit is the same as the teletext threshold bit (bit 1 of the interrupt status
register at VIP address1C0).
VIRQ: this bit returns the status of the INTREQ terminal. Reading this register does not clear this terminal.
COMMAND PHASE
DATA PHASE
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
FIFO Status 0
0
1
0
d
0/1
d
0/1
There is no address associated with reading the FIFO status 0 register.
2.7.3.4
FIFO Status 1 Register
The FIFO status 1 register returns two bits that report status and six unused bits.
7
6
5
4
3
2
1
0
FIFO Status 1
Undefined
R/W
PRESENT
R/W
This bit identifies the VBI FIFO is read–only and is always set to 1.
PRESENT
This bit indicates the VBI FIFO is present and is always set to 1.
COMMAND PHASE
DATA PHASE
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
FIFO Status 1
0
1
0
1
dc
1
There is no address associated with reading the FIFO status 1 register.
2.7.3.5
VBI FIFO
The VBI FIFO stores sliced VBI data. The data may be read from the FIFO at an average rate of one data
byte per three cycles (1 data cycle and 2 wait cycles) when the VIPCLK is at maximum speed.
COMMAND PHASE
DATA PHASE
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
FIFO VBI data read
0
1
0
1
0
D
There is no address associated with reading the VBI FIFO.
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