ds2154lnd2 Maxim Integrated Products, Inc., ds2154lnd2 Datasheet - Page 35

• Manufacturer Part Number: ds2154lnd2
• Description: Ds2154 Enhanced E1 Single Chip Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

Table 5-1. Alarm Criteria
RSA1
(receive signaling all 1s)
RSA0
(receive signaling all 0s)
RDMA
(receive distant multiframe
alarm)
RUA1
(receive unframed all 1s)
RRA
(receive remote alarm)
RCL
(receive carrier loss)
ALARM
Over 16 consecutive frames
(one full MF) time slot 16
contains less than three 0s
Over 16 consecutive frames
(one full MF) timeslot 16
contains all 0s
Bit 6 in time slot 16 of frame
0 set to 1 for two consecutive
MF
Less than three 0s in two
frames (512 bits)
Bit 3 of non-align frame set to
1 for three consecutive
occasions
255 (or 2048) consecutive 0s
received
SET CRITERIA
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Over 16 consecutive frames
(one full MF) time slot 16
contains three or more 0s
Over 16 consecutive frames
(one full MF) time slot 16
contains at least a single 1
Bit 6 in time slot 16 of frame 0
set to 0 for a two consecutive
MF
More than two 0s in two
frames (512 bits)
Bit 3 of non-align frame set to
0 for three consecutive
occasions
In 255-bit times, at least 32 1s
are received
CLEAR CRITERIA
ITU SPEC.
G.775 /
1.6.1.2
G.732
G.732
O.162
O.162
O.162
G.962
2.1.5
2.1.4
4.2
5.2