Figure-15 Remote Loopback 3.8.4 I" />
參數(shù)資料
型號(hào): IDT82V2041EPPG
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 24/75頁(yè)
文件大?。?/td> 0K
描述: IC LIU T1/J1/E1 1CH 44-TQFP
標(biāo)準(zhǔn)包裝: 80
類型: 線路接口裝置(LIU)
規(guī)程: E1
電源電壓: 3.13 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 44-LQFP
供應(yīng)商設(shè)備封裝: 44-TQFP(10x10)
包裝: 托盤
其它名稱: 82V2041EPPG
IDT82V2041E
SINGLE CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT
Functional Description
30
December 9, 2005
Figure-15 Remote Loopback
3.8.4
INBAND LOOPBACK
When PATT[1:0] bits (MAINT0, 0DH) are set to ‘11’, the IDT82V2041E
isconfiguredinInbandLoopbackmode.Inthismode,anunframedactivate/
Deactivate Loopback Code is generated repeatedly in transmit direction
per ANSI T1. 403 which overwrite the transmit signals. In receive direction,
theframedorunframedcodeisdetectedperANSIT1.403,eveninthepres-
ence of 10-2 bit error rate.
If the Automatic Remote Loopback is enabled by setting ARLP bit
(MAINT1, 0EH) to ‘1’, the chip will establish/demolish the Remote Loop-
back based on the reception of the Activate Loopback Code/Deactivate
Loopback Code for 5.1 s. If the ARLP bit (MAINT1, 0EH) is set to ‘0’, the
Remote Loopback can also be demolished forcedly.
3.8.4.1 TRANSMIT ACTIVATE/DEACTIVATE LOOPBACK CODE
The pattern of the transmit Activate/Deactivate Loopback Code is
defined by the TIBLB[7:0] bits (MAINT3, 10H). Whether the code repre-
sentsanActivateLoopbackCodeoraDeactivateLoopbackCodeisjudged
by the far end receiver. The length of the pattern ranges from 5 bits to 8 bits,
as selected by the TIBLB_L[1:0] bits (MAINT2, 0FH). The pattern can be
programmed to 6-bit-long or 8-bit-long by repeating itself respectively if it
is 3-bit-long or 4-bit-long. When the PATT[1:0] bits (MAINT0, 0DH) are set
to ‘11’, the transmission of the Activate/Deactivate Loopback Code is initi-
ated. If the PATT_CLK bit (MAINT0, 0DH) is set to ‘0’ and the PATT[1:0]
bits (MAINT0, 0DH) are set to ‘00’, the transmission of the Activate/Deac-
tivate Loopback Code will stop.
The local transmit activate/deactivate code setting should be the same
as the receive code setting in the remote end. It is the same thing for the
other way round.
3.8.4.2 RECEIVE ACTIVATE/DEACTIVATE LOOPBACK CODE
The pattern of the receive Activate Loopback Code is defined by the
RIBLBA[7:0] bits (MAINT4, 11H). The length of this pattern ranges from 5
bits to 8 bits, as selected by the RIBLBA_L [1:0] bits (MAINT2, 0FH). The
pattern can be programmed to 6-bit-long or 8-bit-long respectively by
repeating itself if it is 3-bit-long or 4-bit-long.
The pattern of the receive Deactivate Loopback Code is defined by the
RIBLBD[7:0] bits (MAINT5, 12H). The length of the receive Deactivate
Loopback Code ranges from 5 bits to 8 bits, as selected by the
RIBLBD_L[1:0] bits (MAINT2, 0FH). The pattern can be programmed to 6-
bit-long or 8-bit-long respectively by repeating itself if it is 3-bit-long or 4-
bit-long.
After the Activate Loopback Code has been detected in the receive data
for more than 30 ms (in E1 mode) / 40 ms (in T1/J1 mode), the IBLBA_S
bit (STAT0, 17H) will be set to ‘1’ to declare the reception of the Activate
Loopback Code.
After the Deactivate Loopback Code has been detected in the receive
dataformorethan30ms(InE1mode)/40ms(InT1/J1mode),theIBLBD_S
bit (STAT0, 17H) will be set to ‘1’ to declare the reception of the Deactivate
Loopback Code.
When the IBLBA_IES bit (INTES, 16H) is set to ‘0’, only the ‘0’ to ‘1’ tran-
sition of the IBLBA_S bit will generate an interrupt and set the IBLBA_IS bit
(INTS0, 19H) to ‘1’. When the IBLBA_IES bit is set to ‘1’, any changes of
the IBLBA_S bit will generate an interrupt and set the IBLBA_IS bit (INTS0,
19H) to ‘1’. The IBLBA_IS bit will be reset to ‘0’ after being read.
When the IBLBD_IES bit (INTES, 16H) is set to ‘0’, only the ‘0’ to ‘1’ tran-
sition of the IBLBD_S bit will generate an interrupt and set the IBLBD_IS
bit (INTS0, 19H) to ‘1’. When the IBLBD_IES bit is set to ‘1’, any changes
of the IBLBD_S bit will generate an interrupt and set the IBLBD_IS bit
(INTS0, 19H) to ‘1’. The IBLBD_IS bit will be reset to ‘0’ after being read.
B8ZS/
HDB3/AMI
Encoder
Jitter
Attenuator
B8ZS/
HDB3/AMI
Decoder
Jitter
Attenuator
Data
Slicer
Adaptive
Equalizer
LOS/AIS
Detection
Clock and
Data
Recovery
Receiver
Internal
Termination
TCLK
TDN
TD/TDP
RCLK
CV/RDN
LOS
RD/RDP
RRING
TTIP
TRING
RTIP
Remote
Loopback
Line
Driver
Waveform
Shaper
Transmitter
Internal
Termination
相關(guān)PDF資料
PDF描述
IDT82V2042EPFG IC LIU T1/J1/E1 2CH SHORT 80TQFP
IDT82V2044EPFG IC LIU T1/E1 QUAD SHORT 128-TQFP
IDT82V2048DAG IC LIU T1/E1 8CH SHORT 144-TQFP
IDT82V2048EDR IC LIU T1/E1 8CH SHORT 208-TQFP
IDT82V2048LBBG IC LIU T1/E1 8CH SHORT 160-BGA
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IDT82V2041EPPG8 功能描述:IC LIU T1/J1/E1 1CH 44-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器,接收器,收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82V2042EPF 功能描述:IC LIU T1/J1/E1 2CH SHORT 80TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器,接收器,收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82V2042EPF8 功能描述:IC LIU T1/J1/E1 2CH SHORT 80TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器,接收器,收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82V2042EPFG 功能描述:IC LIU T1/J1/E1 2CH SHORT 80TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器,接收器,收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82V2042EPFG8 功能描述:IC LIU T1/J1/E1 2CH SHORT 80TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器,接收器,收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)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-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)