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| 型号： | IDT82V2084PF8 |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 22/75页 |
| 文件大小： | 0K |
| 描述： | IC LIU T1/J1/E1 4CH 128-TQFP |
| 标准包装： | 1,000 |
| 类型： | 线路接口装置（LIU） |
| 规程： | E1 |
| 电源电压： | 3.13 V ~ 3.47 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 128-LQFP |
| 供应商设备封装： | 128-TQFP（14x20） |
| 包装： | 带卷 (TR) |
| 其它名称： | 82V2084PF8 |
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29
INDUSTRIAL
TEMPERATURE RANGES
QUAD CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
3.8
ERROR DETECTION/COUNTING AND INSERTION
3.8.1
DEFINITION OF LINE CODING ERROR
The following line encoding errors can be detected and counted by the
IDT82V2084:
Received Bipolar Violation (BPV) Error: In AMI coding, when two
consecutive pulses of the same polarity are received, a BPV error
is declared.
HDB3/B8ZS Code Violation (CV) Error: In HDB3/B8ZS coding, a
CV error is declared when two consecutive BPV errors are
detected, and the pulses that have the same polarity as the previ-
ous pulse are not the HDB3/B8ZS zero substitution pulses.
Excess Zero (EXZ) Error: there are two standards defining the EXZ
errors: ANSI and FCC. The EXZ_DEF bit (MAINT6, 10H...)
chooses which standard will be adopted by the corresponding
channel to judge the EXZ error. Table-21 shows definition of EXZ.
3.8.2
ERROR DETECTION AND COUNTING
Which type of the receiving errors (Received CV/BPV errors, excess
zero errors and PRBS logic errors) will be counted is determined by
ERR_SEL[1:0] bits (MAINT6, 10H...). Only one type of receiving error can
be counted at a time except that when the ERR_SEL[1:0] bits are set to ‘11’,
both CV/BPV and EXZ errors will be detected and counted.
The receiving errors are counted in an internal 16-bit Error Counter.
Once an error is detected, an error interrupt which is indicated by corre-
sponding bit in (INTS1, 17H...) will be generated if it is not masked. This
Error Counter can be operated in two modes: Auto Report Mode and Man-
ual Report Mode, as selected by the CNT_MD bit (MAINT6, 10H...). In Sin-
gle Rail mode, once BPV or CV errors are detected, the CVn pin will be
driven to high for one RCLK period.
Auto Report Mode
In Auto Report Mode, the internal counter starts to count the received
errors when the CNT_MD bit (MAINT6, 10H...) is set to ‘1’. A one-second
timer is used to set the counting period. The received errors are counted
within one second. If the one-second timer expires, the value in the internal
counter will be transferred to (CNT0, 18H...) and (CNT1, 19H...), then the
internal counter will be reset and start to count received errors for the next
second. The errors occurred during the transfer will be accumulated to the
next round. The expiration of the one-second timer will set TMOV_IS bit
(INTS1, 17H...) to ‘1’, and will generate an interrupt if the TIMER_IM bit
(INTM1,12H...)issetto‘0’.TheTMOV_ISbit(INTS1,17H...)willbecleared
after the interrupt register is read. The content in the (CNT0, 18H...) and
(CNT1, 19H...) should be read within the next second. If the counter over-
flows, a counter overflow interrupt which is indicated by CNT_OV_IS bit
(INTS1, 17H...) will be generated if it is not masked by CNT_IM bit (INTM1,
12H...).
Figure-17 Auto Report Mode
Table-21 EXZ Definition
EXZ Definition
ANSI
FCC
AMI
More than 15 consecutive 0s are detected
More than 80 consecutive 0s are detected
HDB3
More than 3 consecutive 0s are detected
B8ZS
More than 7 consecutive 0s are detected
One-Second Timer expired?
counting
Auto Report Mode
(CNT_MD=1)
Bit TMOV_IS is set to '1'
Y
N
CNT0, CNT1
data in counter
counter
0
read the data in CNT0, CNT1 within
the next second
next second
repeats the
same process
Bit TMOV_IS is cleared after
the interrupt register is read
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IDT82V2084PFG | 功能描述:IC LIU T1/J1/E1 4CH 128-TQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:250 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| IDT82V2084PFG8 | 功能描述:IC LINE INTERFC UNIT 4CH 128TQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:250 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| IDT82V2088 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:OCTAL CHANNEL T1/E1/J1 LONG HAUL/ SHORT HAUL LINE INTERFACE UNIT |
| IDT82V2088_08 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:OCTAL CHANNEL T1/E1/J1 LONG HAUL/ SHORT HAUL LINE INTERFACE UNIT |
| IDT82V2088BB | 功能描述:IC LIU T1/J1/E1 8CH 208-BGA RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:250 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
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