參數(shù)資料
型號(hào)： P87C770AAR
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC
中文描述： 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP52
文件頁(yè)數(shù)： 36/80頁(yè)
文件大?。?/td> 266K
代理商： P87C770AAR
1999 Jun 11
36
Philips Semiconductors
Product specification
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
P8xCx70 family
17.3
Closed Caption registers
17.3.1
S
LICE
L
INE
R
EGISTER
(SL)
The Data Slicer contains a software programmable Slice Line Register to extract data from one scan-line out of a range
of scan-lines 17 to 23.
Table 43
Slice Line Register (SFR address B7H)
Table 44
Description of SL bits
17.3.2
C
LOSED
C
APTION
D
ATA
R
EGISTER
1(CCD
ATA
1)
There are two Closed Caption Data Registers: CCData1 and CCData2. At the beginning of the selected CVBS line these
registers will be reset to 00H. The received data will be written into the register at the end of the selected CVBS line, then
also the CC interrupt will be issued. If no data was received, the content of the registers will stay at 00H.
Table 45
Closed Caption Data Register 1 (SFR address D7H)
Table 46
Description of the CCData1 bits
17.3.3
C
LOSED
C
APTION
D
ATA
R
EGISTER
2 (CCD
ATA
2)
Table 47
Closed Caption Data Register 2 (SFR address E7H)
Table 48
Description of CCData2 bits
7
6
5
4
3
2
1
0
CS4
CS3
CS2
CS1
CS0
BIT
SYMBOL
CS4 to CS0
DESCRIPTION
7 to 5
4 to 0
These 3 bits are not used.
Scan-line select.
These 5 bits are used to select one scan line from scan-lines
17 to 23. For example, the value ‘10001’ selects scan-line 17; the value ‘10111’ selects
scan-line 23.
7
6
5
4
3
2
1
0
D7
D6
D5
D4
D3
D2
D1
D0
BIT
SYMBOL
DESCRIPTION
7 to 0
D7 to D0
Byte 1 as sliced from the selected CVBS line.
7
6
5
4
3
2
1
0
D7
D6
D5
D4
D3
D2
D1
D0
BIT
SYMBOL
DESCRIPTION
7 to 0
D7 to D0
Byte 2 as sliced from the selected CVBS line.
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