PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 211

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

B2
MDA
5.2.2
The Interrupt Mask Register (MASK) can selectively mask each interrupt source in the
ISTA register by setting to "1" the corresponding bit.
Reset value: FF
D
CICI
CICU
SF
Semiconductor Group
1=
0=
1=
0=
D-channel mask
1=
0=
CICI-channel mask IOM
1=
0=
CICU-channel mask U
1=
0=
Superframe marker mask
1=
0=
MASK-Register
Write
D
7
H
B2-channel Interrupt
Indicates an interrupt every time B2-channel bytes arrive
Occurs after RB2I and RB2U have been read
Monitor Data Transmit Interrupt
Indicates an interrupt after the MOSR:MDA or the MOSR:MAB bits
have been activated
Indicates the inactive interrupt status
Prevents an interrupt ISTA:D to influence the INT pin
Disables the function described above
Prevents an interrupt ISTA:CICI to influence the INT pin
Disables the function described above
Prevents an interrupt ISTA:CICU to influence the INT pin
Disables the function described above
Prevents an interrupt ISTA:SF to influence the INT pin
Disables the function described above
CICI
6
CICU
Address 0
5
®
-2
SF
4
H
211
MDR
3
B1
2
B2
1
Register Description
Data Sheet 01.99
MDA
0
PEB 2091
PEF 2091