p87c770aar NXP Semiconductors, p87c770aar Datasheet - Page 24

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

Philips Semiconductors
11.3.2
Table 28 Interrupt Priority Register 1 (SFR address F8H)
Table 29 Description of the IP1 bits
11.4
An interrupt request from the Closed Caption Data Slicer or from the OSD will be flagged by setting the related bit in the
Interrupt Request Register 1 to a logic 1. These bits must be reset to logic 0s by software.
Table 30 Interrupt Request Register 1 (SFR address 98H)
Table 31 Description of IRQ1 bits
1999 Jun 11
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
4 to 0
4 to 0
BIT
BIT
7
7
6
5
7
7
6
5
Interrupt Request Register 1 (IRQ1)
I
NTERRUPT
SYMBOL
SYMBOL
RBUSY
PBUSY
PCC
PCC
RCC
RCC
P
RIORITY
6
6
R
This bit is not used, program to a logic 0 for future compatibility reasons.
CC interrupt priority level, fixed to a logic 1.
BUSY interrupt 7 priority level, fixed to a logic 1.
These 5 bits are not used, program to logic 0s for future compatibility reasons.
This bit is not used, program to a logic 0 for future compatibility reasons.
Request for CC interrupt, active HIGH.
Request for BUSY interrupt, active HIGH.
These 5 bits are not used, program to logic 0s for future compatibility reasons.
EGISTER
RBUSY
PBUSY
5
5
1 (IP1)
4
4
24
3
3
DESCRIPTION
DESCRIPTION
2
2
P8xCx70 family
1
1
Product specification
0
0