MT9074_05 Datasheet, PDF (70/151 Pages) Zarlink Semiconductor Inc – T1/E1/J1 Single Chip Transceiver

MT9074
Data Sheet
Bit
Name
Functional Description
7-5
---
Unused.
4
LCDIM
Loop Code Detected Interrupt Mask. When unmasked an
interrupt is triggered when either the loop up (00001) or loop down
(001) code has been detected on the line for a period of 48
milliseconds. If 1 - unmasked, 0 - masked.
3
1SECIM
One Second Status Interrupt Mask. When unmasked an interrupt
is initiated when the 1SEC status bit (page 3 address 12H bit 7)
goes from low to high. If 1 - unmasked, 0 - masked.
2
5SECIM
Five Second Status Interrupt Mask. When unmasked an interrupt
is initiated when the 5 SEC status bit goes from low to high. If 1 -
unmasked, 0 - masked.
1
BIOMIM
Bit Oriented Message Interrupt Mask. When unmasked an
interrupt is initiated when a pattern 111111110xxxxxx0 has been
received on the FDL that is different from the last message. The
new message must persist for 8 out the last 10 message positions
to be accepted as a valid new message. If 1- unmasked, 0 -
masked.
0
SIGIM
Signaling Interrupt Mask. When unmasked an interrupt will be
initiated when a change of state (optionally debounced - see DBEn
in the Data Link, Signaling Control Word page 1 address 12H) is
detected in the signaling bits (AB or ABCD) pattern. If 1 -
unmasked, 0 - masked.
Table 35 - Interrupt Mask Word Three (T1)
(Page 1, Address 1EH)
70
Zarlink Semiconductor Inc.