DS2143Q/T&R Maxim Integrated Products, DS2143Q/T&R Datasheet - Page 22

• Manufacturer Part Number: DS2143Q/T&R
• Description: IC CONTROLLER E1 5V LP 44-PLCC
• Manufacturer: Maxim Integrated Products

Specifications of DS2143Q/T&R

• Controller Type: E1 Controller
• Interface: Parallel/Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 10mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-LCC, 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

BPVCR1:
UPPER BIPOLAR VIOLATION COUNT REGISTER 1 (Address=00 Hex)
BPVCR2:
LOWER BIPOLAR VIOLATION COUNT REGISTER 2 (Address=01 Hex)
Bipolar Violation Count Register 1 (BPVCR1) is the most significant word and BPVCR2 is the least
significant word of a 16-bit counter that records bipolar violations (BPVs). If the HDB3 mode is set for
the receive side via CCR.2, then HDB3 code words are not counted. This counter increments at all times
and is not disabled by loss of sync conditions. The counter saturates at 65,535 and will not rollover. The
bit error rate on a E1 line would have to be greater than 10**-2 before the BPVCR would saturate.
CRCCR1: CRC4 COUNT REGISTER 1 (Address=02 Hex)
CRCCR2: CRC4 COUNT REGISTER 2 (Address=03 Hex)
CRC4 Count Register 1 (CRCCR1) is the most significant word and CRCCR2 is the least significant
word of a 16-bit counter that records word errors in the Cyclic Redundancy Check 4 (CRC4). Since the
maximum CRC4 count in a 1-second period is 1000, this counter cannot saturate. The counter is disabled
during loss of sync at either the FAS or CRC4 level; it will continue to count if loss of sync occurs at the
CAS level.
(MSB)
(MSB)
CRC14
CRC7
BV15
BV7
SYMBOL
SYMBOL
CRC15
CRC0
BV15
BV0
CRC14
CRC6
BV14
BV6
POSITION
POSITION
CRCCR1.7
CRCCR2.0
BPVCR1.7
BPVCR2.0
CRC13
CRC5
BV13
BV5
CRC12
CRC4
BV12
BV4
LSB of the bipolar violation count.
MSB of the CRC4 error count.
LSB of the CRC4 error count.
NAME AND DESCRIPTION
MSB of the bipolar violation count.
NAME AND DESCRIPTION
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CRC11
CRC3
BV11
BV3
CRC10
CRC2
BV10
BV2
CRC1
CRC9
BV1
BV9
CRC0
CRC8
BV0
BV8
(LSB)
(LSB)
DS2143/DS2143Q
CRCCR2
CRCCR1
BPVCR1
BPVCR2