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| 型号： | DS2141AQ/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/39页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER T1 5V 44-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 500 |
| 控制器类型： | T1 控制器 |
| 接口： | 并行/串行 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 10mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 带卷 (TR) |
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DS2141A
19 of 39
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)
(LSB)
BV15
BV14
BV13
BV12
BV11
BV10
BV9
BV8
BPVCR1
BV7
BV6
BV5
BV4
BV3
BV2
BV1
BV0
BPVCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
BV15
BPVCR1.7
MSB of the bipolar violation count.
BV0
BPVCR2.0
LSB of the bipolar violation count.
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)
(LSB)
CRC7
CRC6
CRC5
CRC4
CRC3
CRC2
CRC1
CRC0
CRCCR1
CRC7
CRC6
CRC5
CRC4
CRC3
CRC2
CRC1
CRC0
CRCCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
CRC7
CRCCR1.7
MSB of the CRC6 count.
CRC0
CRCCR2.0
LSB of the CRC6 count.
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.
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