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參數(shù)資料
| 型號： | XRT81L27 |
| 廠商： | Exar Corporation |
| 英文描述： | Seven Channel E1 Line Interface Unit with Clock Recovery(7通道 E1線接口單元（帶時(shí)鐘恢復(fù)）) |
| 中文描述： | 七通道E1線路接口單元的時(shí)鐘恢復(fù)（7通道素E1線接口單元（帶時(shí)鐘恢復(fù)）） |
| 文件頁數(shù)： | 7/28頁 |
| 文件大小： | 140K |
| 代理商： | XRT81L27 |
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XRT81L27
SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
PRELIMINARY
REV. P1.0.1
7
48
SDI/B1
I
Serial Data Input Port:
In Host Mode, this pin is the serial data input port (see Figure 5).
In Hardware Mode, B1, together with B2 (pin49) and B3 (pin 50)are control
bits used to select which one of the seven channels to be placed in Loop-
back mode. Analog or Remote Loop-back is determined by LBM(pin 47).
49
SClk/B2
I
Microprocessor Serial Interface Clock:
In Host Mode, this clock signal is used to control data "Read" or "Write" oper-
ation for the Serial Interface.
In Hardware Mode, B2, together with B1 and B3 are control bits to select
which one of the seven channels to be placed in Loop-back mode.(see pin
50
CS/B3
I
Chip Select Input:
In Host Mode, this pin must be asserted Low in order to enable communica-
tion with the device via the Serial Interface.
In Hardware Mode, B3, together with B1 and B2 are control bits to select
which one of the seven channels to be placed in Loop-back mode.(see pin
48 description)
51
TAOS6/CODE
I
Transmit All Ones:
This pin is set to insert AMI all ones data to the line using MCLK as refer-
ence.
In Host Mode, this pin can be left unconnected. Internally pulled-down with
50K
52
TNEG6/CODE
I
Transmitter 6 Negative Data Input:
In dual-rail mode, this signal is the n-rail data input for transmitter 6.
See pin 39 description for single-rail mode operation.
Internally pulled-down with 50K
.
53
TPOS6/TDATA6
I
Transmitter 6 Positive Data Input:
In dual-rail mode, this signal is the p-rail input data for transmitter 6.
Transmitter 6 NRZ Data Input:
In single-rail mode, this signal is used as the NRZ input data for transmitter 6.
54
TClk6
I
Transmitter 6 Clock Input:
E1 rate at 2.048MHz ± 50ppm.
55
GND
****
Digital Supply Ground
56
VDD
****
Digital Positive Supply(3.3V± 5%)
57
LOS6
O
Receiver 6 Loss of Signal:
This signal is asserted High to indicate loss of signal at the receive input.
P
IN
#
N
AME
T
YPE
D
ESCRIPTION
Loop-back Channel Control
B1
0
0
0
0
1
1
1
1
B2
0
0
1
1
0
0
1
1
B3
0
1
0
1
0
1
0
1
Chan. #
1
2
3
4
5
6
7
All
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相關(guān)代理商/技術(shù)參數(shù) |
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| XRT81L27IV | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT81L27IV-F | 功能描述:外圍驅(qū)動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XR-T8205CP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Ringer |
| XR-T8205P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Ringer |
| XRT82D20 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
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