DS21Q55N Maxim Integrated Products, DS21Q55N Datasheet - Page 174

• Manufacturer Part Number: DS21Q55N
• Description: Framer E1/J1/T1 3.3V 256-Pin BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q55N

• Package: 256BGA
• Number Of Transceivers: 4
• Standard Framing Format: E1|J1|T1
• Maximum Supply Current: 75(Typ) mA
• Minimum Single Supply Voltage: 3.135 V
• Maximum Single Supply Voltage: 3.465 V

Figure 24-1. Simplified Diagram of BERT in Network Direction
Figure 24-2. Simplified Diagram of BERT in Backplane Direction
PER-CHANNEL AND
PER-CHANNEL AND
F-BIT (T1 MODE)
FROM RECEIVE
F-BIT (T1 MODE)
TO TRANSMIT
FROM RECEIVE
TO TRANSMIT
MAPPING
FRAMER
FRAMER
MAPPING
FRAMER
FRAMER
1
0
RECEIVER
RECEIVER
BERT
BERT
174 of 237
TRANSMITTER
TRANSMITTER
BERT
BERT
0
1
TO RECEIVE
SYSTEM
BACKPLANE
INTERFACE
TO RECEIVE
SYSTEM
BACKPLANE
INTERFACE
FROM TRANSMIT
SYSTEM
BACKPLANE
INTERFACE
FROM TRANSMIT
SYSTEM
BACKPLANE
INTERFACE