參數(shù)資料
型號： IDT82V2051EPPG
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 8/61頁
文件大小： 0K
描述： IC LIU E1 SGL SHORT HAUL 44-TQFP
標準包裝： 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
供應商設備封裝： 44-TQFP（10x10）
包裝： 托盤
其它名稱： 82V2051EPPG
IDT82V2051E
SINGLE CHANNEL E1 SHORT HAUL LINE INTERFACE UNIT
Functional Description
16
December 9, 2005
3.2.3.2 USER-PROGRAMMABLE ARBITRARY WAVEFORM
When the PULS[3:0] bits are set to ‘11xx’, user-programmable arbitrary
waveform generator mode can be used. This allows the transmitter perfor-
mance to be tuned for a wide variety of line condition or special application.
Each pulse shape can extend up to 4 UIs (Unit Interval), addressed by
UI[1:0] bits (TCF3, 08H) and each UI is divided into 16 sub-phases,
addressedbytheSAMP[3:0]bits(TCF3,08H).Thepulseamplitudeofeach
phase is represented by a binary byte, within the range from +63 to -63,
stored in WDAT[6:0] bits (TCF4, 09H) in signed magnitude form. The most
positive number +63 (D) represents the positive maximum amplitude of the
transmit pulse while the most negative number -63 (D) represents the max-
imum negative amplitude of the transmit pulse. Therefore, up to 64 bytes
are used.
There are two standard templates which are stored in an on-chip ROM.
User can select one of them as reference and make some changes to get
the desired waveform.
User can change the wave shape and the amplitude to get the desired
pulse shape. In order to do this, firstly, users can choose a set of waveform
value from the following two tables, which is the most similar to the desired
pulse shape. Table-2 and Table-3 list the sample data and scaling data of
each of the two templates. Then modify the corresponding sample data to
get the desired transmit pulse shape.
Secondly, through the value of SCAL[5:0] bits increased or decreased
by 1, the pulse amplitude can be scaled up or down at the percentage ratio
against the standard pulse amplitude if needed. For different pulse shapes,
the value of SCAL[5:0] bits and the scaling percentage ratio are different.
The following two tables list these values.
Do the followings step by step, the desired waveform can be pro-
grammed, based on the selected waveform template:
(1).Select the UI by UI[1:0] bits (TCF3, 08H)
(2).Specify the sample address in the selected UI by SAMP [3:0] bits
(TCF3, 08H)
(3).Write sample data to WDAT[6:0] bits (TCF4, 09H). It contains the
data to be stored in the RAM, addressed by the selected UI and the
corresponding sample address.
(4).Set the RW bit (TCF3, 08H) to ‘0’ to implement writing data to RAM,
or to ‘1’ to implement read data from RAM
(5).Implement the Read from RAM/Write to RAM by setting the DONE
bit (TCF3, 08H)
Repeat the above steps until all the sample data are written to or read
from the internal RAM.
(6).Write the scaling data to SCAL[5:0] bits (TCF2, 07H) to scale the
amplitude of the waveform based on the selected standard pulse
amplitude
WhenmorethanoneUIisusedtocomposethepulsetemplate,theover-
lap of two consecutive pulses could make the pulse amplitude overflow
(exceed the maximum limitation) if the pulse amplitude is not set properly.
This overflow is captured by DAC_OV_IS bit (INTS1, 1AH), and, if enabled
by the DAC_OV_IM bit (INTM1, 15H), an interrupt will be generated.
The following tables give all the sample data based on the preset pulse
templates in detail for reference. For preset pulse templates, scaling up/
down against the pulse amplitude is not supported.
1.Table-2 Transmit Waveform Value For E1 75
2.Table-3 Transmit Waveform Value For E1 120
Table-2 Transmit Waveform Value For E1 75 ohm
Sample
UI 1
UI 2
UI 3
UI 4
1
0000000
2
0000000
3
0000000
4
0001100
0000000
5
0110000
0000000
6
0110000
0000000
7
0110000
0000000
8
0110000
0000000
9
0110000
0000000
10
0110000
0000000
11
0110000
0000000
12
0110000
0000000
13
0000000
14
0000000
15
0000000
16
0000000
SCAL[5:0] = 100001 (default), One step change of this value of SCAL[5:0]
results in 3% scaling up/down against the pulse amplitude.
Table-3 Transmit Waveform Value For E1 120 ohm
Sample
UI 1
UI 2
UI 3
UI 4
1
0000000
2
0000000
3
0000000
4
0001111
0000000
5
0111100
0000000
6
0111100
0000000
7
0111100
0000000
8
0111100
0000000
9
0111100
0000000
10
0111100
0000000
11
0111100
0000000
12
0111100
0000000
13
0000000
14
0000000
15
0000000
16
0000000
SCAL[5:0] = 100001 (default), One step change of this value of SCAL[5:0]
results in 3% scaling up/down against the pulse amplitude.
相關PDF資料
PDF描述
IDT82V2052EPFG IC LIU E1 2CH SHORT HAUL 80-TQFP
IDT82V2081PPG8 IC LIU T1/J1/E1 1CH 44-TQFP
IDT82V2082BFG IC LIU T1/E1/J1 2CH 81BGA
IDT82V2084PFG IC LIU T1/J1/E1 4CH 128-TQFP
IDT82V2088DRG IC LIU T1/J1/E1 8CH 208-TQFP
相關代理商/技術參數(shù)
參數(shù)描述
IDT82V2051EPPG8 功能描述:IC LIU E1 SGL SHORT HAUL 44-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82V2052E 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:DUAL CHANNEL E1 SHORT HAUL LINE INTERFACE UNIT
IDT82V2052EPF 功能描述:IC LIU E1 2CH SHORT HAUL 80-TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82V2052EPF8 功能描述:IC LIU E1 2CH SHORT HAUL 80-TQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR)
IDT82V2052EPFG 功能描述:IC LIU E1 2CH SHORT HAUL 80-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR)
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*