DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 70

• Manufacturer Part Number: DS21455
• Description: Network Controller & Processor ICs Quad E1-T1-J1 Single -Chip Transceiver (S
• Manufacturer: Maxim Integrated Products

Specifications of DS21455

• Product: Framer
• Number Of Transceivers: 4
• Data Rate: 64 Kbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 328 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: BGA

Table 11-3. E1 Alarm Criteria
V52LNK
ALARM
RDMA
RLOS
RUA1
RRA
RCL
An RLOS condition exists on
power-up prior to initial
synchronization, when a resync
criteria has been met, or when a
manual resync has been initiated
via E1RCR1.0
255 or 2048 consecutive zeros
received as determined by
E1RCR2.0
Bit 3 of non-align frame set to
one for three consecutive
occasions
Fewer than three zeros in two
frames (512 bits)
Bit 6 of time slot 16 in frame 0
has been set for two consecutive
multiframes
Two out of three Sa7 bits are
zero
SET CRITERIA
70 of 270
In 255-bit times, at least 32 ones
are received
Bit 3 of nonalign frame set to
zero for three consecutive
occasions
More than two zeros in two
frames (512 bits)
CLEAR CRITERIA
DS21455/DS21458 Quad T1/E1/J1 Transceivers
G.775/G.962
SPEC.
1.6.1.2
O.162
O.162
G.965
2.1.4
ITU