psb21391 Infineon Technologies Corporation, psb21391 Datasheet - Page 215

• Manufacturer Part Number: psb21391
• Description: Siemens Codec With Upn Transceiver
• Manufacturer: Infineon Technologies Corporation

7.2.12
Value after reset: 00
ASTI
ACKxy
After a STIxy interrupt the microcontroller has to acknowledge the interrupt by setting the
corresponding ACKxy bit.
0: No activity is initiated
1: Sets the acknowledge bit ACKxy for a STIxy interrupt
7.2.13
Value after reset: FF
MSTI
For the MSTI register following logical states are applied:
0: Interrupt is not masked
1: Interrupt is masked
STOVxy
By masking the STOV bits the number and time of the STOV interrupts for a certain
enabled STIxy interrupt can be controlled. For an enabled STIxy the own STOVxy is
generated when the STOVxy is enabled (MSTI.STIxy and MSTI.STOVxy = ’0’).
Additionally all other STOV interrupts of which the corresponding STI is disabled
(MSTI.STI = ’1’ and MSTI.STOV = ’0’) are generated.
STIxy
The STIxy interrupts can be masked by setting the corresponding mask bit to ’1’. For a
masked STIxy no STOV interrupt is generated.
Data Sheet
ASTI - Acknowledge Synchronous Transfer Interrupt
MSTI - Mask Synchronous Transfer Interrupt
7
7
STOV
21
0
... Acknowledge Synchronous Transfer Interrupt
... Synchronous Transfer Overflow for STIxy
... Synchronous Transfer Interrupt xy
STOV
H
H
20
0
STOV
11
0
STOV
10
0
205
ACK
STI
21
21
ACK
STI
20
20
Detalled Register Description
ACK
STI
11
11
0
0
ACK
STI
10
10
RD/WR (59
PSB 21391
PSB 21393
2001-03-07
WR (58
H
H
)
)