DS21455 Maxim Integrated Products, DS21455 Datasheet - Page 196

• 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

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 0 to 3/Error Insertion Rate Select Bits (ER0 to ER3).
Bit 4/Constant Errors (CE). When this bit is set high (and the ER0 to ER3 bits are not set to 0000), the error insertion logic
will ignore the number of error registers (NOE1, NOE2) and generate errors constantly at the selected insertion rate. When CE
is set to zero, the NOEx registers determine how many errors are to be inserted.
Bit 5/Unused, must be set to zero for proper operation.
Bit 6/Unused, must be set to zero for proper operation.
Bit 7/Write NOE Registers (WNOE). If the host wishes to update to the NOEx registers, this bit must be toggled from a zero
to a one after the host has already loaded the prescribed error count into the NOEx registers. The toggling of this bit causes the
error count loaded into the NOEx registers to be loaded into the error insertion circuitry on the next clock cycle. Subsequent
updates require that the WNOE bit be set to zero and then one once again.
ER3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ER2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
WNOE
7
0
ER1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ER0
—
ERC
Error Rate Control Register
EBh
6
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
No errors inserted
1 in 16
1 in 32
1 in 64
1 in 128
1 in 256
1 in 512
1 in 1024
1 in 2048
1 in 4096
1 in 8192
1 in 16,384
1 in 32,768
1 in 65,536
1 in 131,072
1 in 262,144
ERROR RATE
—
5
0
CE
4
0
196 of 270
ER3
3
0
ER2
2
0
ER1
1
0
ER0
0
0