DS21Q55 Maxim Integrated Products, DS21Q55 Datasheet - Page 65

• Manufacturer Part Number: DS21Q55
• Description: IC TXRX QUAD T1/E1/J1 SCT 256BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q55

• Function: Transceiver
• Interface: E1, J1, T1
• Number Of Circuits: 4
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Includes: BERT Generator and Detector, Dual HDLC Controllers
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

Table 8-B. E1 Alarm Criteria
ALARM
V52LNK
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 by
E1RCR1.0
255 or 2048 consecutive 0s received as
determined by E1RCR2.0
Bit 3 of nonalign frame set to 1 for three
consecutive occasions
Fewer than three 0s 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 0
SET CRITERIA
65 of 237
At least 32 1s in 255-bit times
are received
Bit 3 of nonalign frame set to
0 for three consecutive
occasions
More than two 0s in two
frames (512 bits)
CLEAR CRITERIA
SPECIFICATION
G.775/G.962
1.6.1.2
O.162
O.162
G.965
2.1.4
ITU