DS2141A Maxim Integrated Products, DS2141A Datasheet - Page 19
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DS2141A
Manufacturer Part Number
DS2141A
Description
IC CONTROLLER T1 5V 40-DIP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2141AQ.pdf
(39 pages)
Specifications of DS2141A
Controller Type
T1 Controller
Interface
Parallel/Serial
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
10mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS2141A
Manufacturer:
2002+
Quantity:
6 219
Company:
Part Number:
DS2141AQ
Manufacturer:
DALLAS
Quantity:
5 510
Part Number:
DS2141AQ
Manufacturer:
DALLAS
Quantity:
20 000
Company:
Part Number:
DS2141AQ+
Manufacturer:
Maxim Integrated Products
Quantity:
135
Company:
Part Number:
DS2141AQ+T&R
Manufacturer:
Maxim Integrated
Quantity:
10 000
Company:
Part Number:
DS2141AQ/T&R
Manufacturer:
Maxim Integrated
Quantity:
10 000
5.0 ERROR COUNT REGISTERS
There is a set of three counters in the DS2141A that record bipolar violations, errors in the CRC6 code
words, and frame bit errors. Each of these three counters is automatically updated on 1-second boundaries
as determined by the 1-second timer in Status Register 2 (SR2.5). Hence, these registers contain
performance data from the previous second. The user can use the interrupt from the 1-second timer to
determine when to read these registers. The user has a full second to read the counters before the data is
lost.
BPVCR1: BIPOLAR VIOLATION COUNT REGISTER 1 (23h)
BPVCR2: BIPOLAR VIOLATION COUNT REGISTER 2 (24h)
(MSB)
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 B8ZS mode is set for
the receive side via CCR2.2, then B8ZS 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 roll over. If the
DS2141A is programmed to record ESF error events (RCR2.0=1), then the BPVCR will increment for
each ESF multiframe that contains either an error in the CRC6 word or an out-of-frame occurrence (loss
of sync).
CRCCR1: CRC6 COUNT REGISTER 1 (25h)
CRCCR2: CRC6 COUNT REGISTER 2 (26h)
(MSB)
CRC6 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 6 (CRC6) when the
DS2141A is operated in the ESF framing mode (CCR2.3 = 1). This counter saturates at 65,535 and will
not roll over. The counter is disabled during loss of sync conditions.
CRC7
CRC7
BV15
BV7
SYMBOL
SYMBOL
CRC7
CRC0
BV15
BV0
CRC6
CRC6
BV14
BV6
POSITION
POSITION
CRCCR1.7
CRCCR2.0
BPVCR1.7
BPVCR2.0
CRC5
CRC5
BV13
BV5
CRC4
CRC4
BV12
BV4
LSB of the bipolar violation count.
MSB of the CRC6 count.
LSB of the CRC6 count.
NAME AND DESCRIPTION
MSB of the bipolar violation count.
NAME AND DESCRIPTION
19 of 39
CRC3
CRC3
BV11
BV3
CRC2
CRC2
BV10
BV2
CRC1
CRC1
BV9
BV1
CRC0
CRC0
(LSB)
(LSB)
BV8
BV0
CRCCR1
CRCCR2
BPVCR1
BPVCR2
DS2141A