txc-03456 TranSwitch Corporation, txc-03456 Datasheet - Page 83

• Manufacturer Part Number: txc-03456
• Description: Device Level Mapper
• Manufacturer: TranSwitch Corporation

INTERRUPT MASK BIT DEFINITIONS
The interrupt mask bits work in conjunction with the latched bit positions to provide a hardware and global soft-
ware interrupt indication. Writing a 1 to one or more mask bits, when the corresponding alarm occurs, will
cause the global software interrupt (SINT, Address 26H, bit 7) to occur, and will cause a hardware interrupt to
occur by setting the HINT control bit (Address 33H, bit 7) to 1. The hardware interrupt pin will be turned off
when the latched alarm bit causing the interrupt is cleared, or when the corresponding interrupt mask bit is set
to 0, or the HINT bit is set to 0. The bit positions in the mask bit segment locations correspond to the bit posi-
tions in the status register segment locations.
Address
30
31
32
33
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
2
1
0
7
6
5
2
BUSERR
PSLERR
EXTLOS
ABLOJ1
DBLOJ1
Symbol
RFIFOE
RLAISD
AIPLOC
ANOOL
TLAISD
TFIFOE
XISTAT
ABLOC
DBLOC
C2EQ0
LAISC
J1LOL
XSTAI
XPAIS
E1AIS
J1TIM
RLOC
TLOC
RRDI
HINT
NEW
XAIS
Analyzer Out Of Lock
Transmit line 140 Mbit/s AIS Detected
Transmit FIFO error (underflowed or overflowed)
Add bus loss of J1
Loss of AIS clock
External AIS generate signal on EXAIS pin
Drop bus loss of J1
AIS detected in the E1 byte (Transport Overhead)
Drop bus parity error
Receive FIFO error (underflowed or overflowed)
Receive RDI/FERF (bit 5 in G1)
Path Signal Label error
Unequipped C2 status (00H)
J1 loss of lock (alignment unstable)
J1 Trace identifier mismatch
Receive Line AIS Detected
Transmit Line Loss Of Clock
Add bus loss of clock
Drop bus loss of clock
Receive line loss of clock
External network alarm
External STS alarm
External Path AIS alarm
Hardware interrupt enable
External Loss Of Signal alarm
Alarm Indication Port Loss of clock alarm
3 consecutive new pointers received
DATA SHEET
- 83 -
Description
Ed. 1A, January 2000
TXC-03456
TXC-03456-MB
L4M