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參數(shù)資料
| 型號： | IDT82P5088BBG |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁數(shù)： | 28/81頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU T1/E1/J1 OCTAL 256PBGA |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 功能： | 線路接口單元（LIU） |
| 接口： | E1，J1，T1 |
| 電路數(shù)： | 8 |
| 電源電壓： | 1.8V, 3.3V |
| 功率（瓦特）： | 2.57W |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 256-BGA |
| 供應(yīng)商設(shè)備封裝： | 256-PBGA（17x17） |
| 包裝： | 托盤 |
| 包括： | 集成式時鐘適配器 |
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IDT82P5088
UNIVERSAL OCTAL T1/E1/J1 LIU WITH INTEGRATED CLOCK ADAPTER
FUNCTIONAL DESCRIPTION
34
February 5, 2009
3.6
ERROR DETECTION/COUNTING AND INSERTION
3.6.1
DEFINITION OF LINE CODING ERROR
The following line encoding errors can be detected and counted by the
IDT82P5088:
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, 31H...)
chooses which standard will be adopted by the corresponding
channel to judge the EXZ error. Table-23 shows definition of EXZ.
3.6.2
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, 31H...). 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, 3BH...) 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, 31H...). 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, 31H...) 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 (CNTL, 3CH...) and (CNTH, 3DH...), 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, 3BH...) to ‘1’, and will generate an interrupt if the TIMER_IE bit
(INTENC1,34H...)is setto‘0’.TheCV_ISbit(INTS1,3BH...)willbecleared
after the interrupt register is read. The content in the (CNTL, 3CH...) and
(CNTH, 3DH...) 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, 3BH...) will be generated if it is not masked by CNT_IE bit
(INTENC1, 34H...).
Figure-17 Auto Report Mode
Table-23 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
CNTL, CNTH
data in counter
counter
0
read the data in CNTL, CNTH 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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| IDT82P5088BBG8 | 制造商:Integrated Device Technology Inc 功能描述:IC LIU T1/E1/J1 OCTAL 256PBGA |
| IDT82V1054A | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE |
| IDT82V1054APF | 功能描述:IC PCM CODEC 4CH MPI 3.3V 64TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| IDT82V1054APF8 | 功能描述:IC PCM CODEC 4CH MPI 3.3V 64TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| IDT82V1054APFG | 功能描述:IC PCM CODEC 4CH MPI 3.3V 64TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
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