SDA5250 Datasheet, PDF (63/143 Pages) Siemens Semiconductor Group – TVTEXT 8-Bit Microcontroller

SDA 525x
Table 14
Interrupt Source
External Request 0
Internal Timer/Counter 0
External Request 1
Internal Timer/Counter 1
Serial Interface
Teletext Sync Signals
Analog Digital Converter
Starting Address
03
(03_H)
11
(0B_H)
19
(13_H)
27
(1B_H)
35
(23_H)
43
(2B_H)
51
(33_H)
6.3.4
Interrupt Control
The information flags, which control the entire interrupt system, are stored in following
special function registers:
IE
IP0
IP1
IRCON
TCON
SCON
TTXSIR
ACQSIR
ADCON
Interrupt Enable Register
A8_H
Interrupt Priority Register 1
A9_H
Interrupt Priority Register 2
AA_H
Interrupt Control
AB_H
Timer/Counter Control Register 88_H
Serial Control Register
98_H
Sync Interrupt Request Register C8_H
Acquisition Sync Interrupt Register C0_H
ADC-Control Register
D8_H
The interrupt system is shown diagrammatically in Figure 23.
A source requests an interrupt by setting its associated interrupt request flag in the
TCON, SCON, TTXSIR, ACQSIR or ADCON- register, as described in detail in
Table 15.
Semiconductor Group
63
1998-04-08