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STANDARD PRODUCT
PM4351 COMET
DATA SHEET
PMC-1970624
ISSUE 10
COMBINED E1/T1 TRANSCEIVER
PROPRIETARY AND CONFIDENTIAL
177
Register 050H: SIGX Configuration Register (COSS = 0)
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reserved
COSS
SIGE
Reserved
Reserved
ESF
IND
PCCE
0
0
0
0
0
0
0
0
Reserved:
These bits must be a logic 0 for correct operation.
COSS:
The COSS bit allows the channels to be polled to determine in which
channel(s) the signaling state has changed. When COSS is a logic 1, the
SIGX register space is configured to allow the change of signaling state event
bits to be read. When COSS is a logic 0, the SIGX register space is
configured to allow indirect access to the configuration and signaling data for
each of the 24 T1 or 30 E1 channels.
SIGE:
The SIGE bit enables a change of signaling state in any one of the 24
channels (T1 mode) or 30 channels for (E1 mode ) to generate an interrupt
on the INTB output.
When SIGE is set to logic 1, a change of signaling state in any channel
generates an interrupt. When SIGE is set to logic 0, the interrupt is disabled.
ESF:
The framing format in T1 mode is controlled by the ESF bit. A logic 1 in the
ESF bit position selects ESF; a logic 0 bit selects SF, SLC96 or T1DM.
When in E1 mode, this bit is ignored.