DS2154 Dallas Semiconducotr, DS2154 Datasheet - Page 36

• Manufacturer Part Number: DS2154
• Description: Enhanced E1 Single Chip Transceiver
• Manufacturer: Dallas Semiconducotr

ALARM CRITERIA Table 4-1
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) timeslot 16
contains less than three 0s
over 16 consecutive frames
(one full MF) timeslot 16
contains all 0s
bit 6 in timeslot 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
36 of 87
over 16 consecutive frames
(one full MF) timeslot 16
contains three or more 0s
over 16 consecutive frames
(one full MF) timeslot 16
contains at least a single 1
bit 6 in timeslot 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
DS2154