DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 193

• 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

27.3 BERT Bit Counter
Once the BERT has achieved synchronization, this 32-bit counter will increment for each data bit (i.e.,
clock) received. Toggling the LC control bit in BC1 can clear this counter, which saturates when full and
will set the BBCO status bit.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 0 to 7/BERT Bit Counter Bits 0 to 7 (BBC0 to BBC7). BBC0 is the LSB of the 32-bit counter.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 0 to 7/BERT Bit Counter Bits 8 to 15 (BBC8 to BBC15).
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 0 to 7/BERT Bit Counter Bits 16 to 23 (BBC16 to BBC23).
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 0 to 7/BERT Bit Counter Bits 24 to 31 (BBC24 to BBC31). BBC31 is the MSB of the 32-bit counter.
BBC15
BBC23
BBC31
BBC7
7
0
7
0
7
0
7
0
BBC14
BBC22
BBC30
BBC6
BBC1
BERT Bit Count Register 1
E3h
BBC2
BERT Bit Count Register 2
E4h
BBC3
BERT Bit Count Register 3
E5h
BBC4
BERT Bit Count Register 4
E6h
6
6
6
6
0
0
0
0
BBC13
BBC21
BBC29
BBC5
5
0
5
0
5
0
5
0
BBC12
BBC20
BBC28
BBC4
4
0
4
0
4
0
4
0
193 of 270
BBC11
BBC19
BBC27
BBC3
3
0
3
0
3
0
3
0
BBC10
BBC18
BBC26
BBC2
2
0
2
0
2
0
2
0
BBC17
BBC25
BBC1
BBC9
1
0
1
0
1
0
1
0
BBC16
BBC24
BBC0
BBC8
0
0
0
0
0
0
0
0