參數(shù)資料
型號(hào)： IDT82V2048LBBG
廠商： IDT, Integrated Device Technology Inc
文件頁(yè)數(shù)： 6/48頁(yè)
文件大?。?/td> 0K
描述： IC LIU T1/E1 8CH SHORT 160-BGA
標(biāo)準(zhǔn)包裝： 14
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： 160-BGA
供應(yīng)商設(shè)備封裝： 160-PBGA（15x15）
包裝： 托盤
其它名稱： 82V2048LBBG
14
IDT82V2048L OCTAL T1/E1 SHORT HAUL ANALOG FRONT END
INDUSTRIAL TEMPERATURE RANGES
2.5
TRANSMITTER
In transmit path, data in NRZ format is clocked into the device on
TDPn and TDNn. The data is sampled into the device on falling edges of
TCLKn. The shape of the pulses are user programmable to ensure that
the T1/E1 pulse template is met after the signal passes through different
cable lengths or types.
2.5.1
WAVEFORM SHAPER
T1 pulse template, specified in the DSX-1 Cross-Connect by ANSI
T1.102, is illustrated in Figure-5. The device has built-in transmit wave-
form templates, corresponding to 5 levels of pre-equalization for cable of
a length from 0 to 655 ft with each increment of 133 ft.
E1 pulse template, specified in ITU-T G.703, is shown in Figure-6.
The device has built-in transmit waveform templates for cable of 75 or
120 .
Any one of the six built-in waveforms can be chosen in both hard-
ware mode and host mode. In hardware control mode, setting pins
TS[2:0] can select the required waveform template for all the transmit-
ters, as shown in Table-5. In host mode, the waveform template can be
configured on a per-channel basis. Bits TSIA[2:0] in register TSIA are
used to select the channel and bits TS[2:0] in register TS are used to
select the required waveform template.
The built-in waveform shaper uses an internal high frequency clock
which is 16XMCLK as the clock reference. This function will be
bypassed when MCLK is unavailable.
Figure-5 DSX-1 Waveform Template
Figure-6 CEPT Waveform Template
2.6
LINE INTERFACE CIRCUITRY
The transmit and receive interface RTIPn/RRINGn and TTIPn/
TRINGn connections provide a matched interface to the cable. Figure-7
shows the appropriate external components to connect with the cable
for one transmit/receive channel. Table-6 summarizes the component
values based on the specific application.
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
0
250
500
750
1000
1250
Time (ns)
Normaliz
ed
Amplit
ude
-300
-200
-100
0
100
200
300
Time (ns)
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
1.20
Nor
m
al
iz
ed
A
m
pli
tude
Table-5 Built-in Waveform Template Selection
TS2
TS1
TS0
Service
Clock Rate
Cable Length
Maximum Cable Loss (dB)(1)
1. Maximum cable loss at 772 kHz.
0
E1
2.048 MHz
120
/75 Cable
-
00
1
Reserved
01
0
01
1
T1
1.544 MHz
0-133 ft. ABAM
0.6
1
0
133-266 ft. ABAM
1.2
1
0
1
266-399 ft. ABAM
1.8
1
0
399-533 ft. ABAM
2.4
1
533-655 ft. ABAM
3.0
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IDT82V2048LDAG 功能描述:IC LIU T1/E1 8CH SHORT 144-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)
IDT82V2048S 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT WITH SINGLE ENDED OPTION
IDT82V2048SBB 功能描述:IC LIU T1/E1 8CH SHORT 160-BGA 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)
IDT82V2048SBBG 功能描述:IC LIU T1/E1 8CH SHORT 160-BGA 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)
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