p87c770aar NXP Semiconductors, p87c770aar Datasheet - Page 36

• Manufacturer Part Number: p87c770aar
• Description: Microcontrollers Ntsc With On-screen Display Closed Caption
• Manufacturer: NXP Semiconductors

Philips Semiconductors
17.3
17.3.1
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
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
Table 47 Closed Caption Data Register 2 (SFR address E7H)
Table 48 Description of CCData2 bits
1999 Jun 11
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
7 to 5
4 to 0
7 to 0
7 to 0
BIT
BIT
BIT
D7
D7
7
7
7
Closed Caption registers
S
C
C
LICE
LOSED
LOSED
L
CS4 to CS0 Scan-line select. These 5 bits are used to select one scan line from scan-lines
INE
SYMBOL
C
SYMBOL
C
SYMBOL
D7 to D0
D7 to D0
APTION
APTION
R
D6
D6
6
6
6
EGISTER
D
D
ATA
ATA
(SL)
These 3 bits are not used.
17 to 23. For example, the value ‘10001’ selects scan-line 17; the value ‘10111’ selects
scan-line 23.
Byte 1 as sliced from the selected CVBS line.
Byte 2 as sliced from the selected CVBS line.
R
R
EGISTER
EGISTER
D5
D5
5
5
5
1(CCD
2 (CCD
ATA
ATA
CS4
D4
D4
4
4
4
1)
2)
36
CS3
D3
D3
3
3
3
DESCRIPTION
DESCRIPTION
DESCRIPTION
CS2
D2
D2
2
2
2
P8xCx70 family
CS1
D1
D1
1
1
1
Product specification
CS0
D0
D0
0
0
0