參數(shù)資料
型號(hào)： T7290A
廠商： Lineage Power
英文描述： DS1/T1/CEPT/E1 Line Interface(DS1/T1/CEPT/E1 線接口)
中文描述： DS1/T1/CEPT/E1線路接口（DS1/T1/CEPT/E1線接口）
文件頁(yè)數(shù)： 5/24頁(yè)
文件大?。?/td> 420K
代理商： T7290A
Data Sheet
April 1998
T7290A DS1/T1/CEPT/E1 Line Interface
5
Lucent Technologies Inc.
Pin Information
(continued)
Table 1. Pin Descriptions
(continued)
* I = input, O = output, I
u
= input with pull-up, I
d
= input with pull-down.
Pin
13
Symbol
ESA
Type
*
O
Name/Function
Jitter Attenuator Alarm.
This pin is set high if the phase jitter of the incom-
ing signal exceeds the tolerance of the jitter attenuator's buffer. This may
result in a loss of receive data.
Output Loss of Signal.
This pin is set high when either the transmit clock
(TCLK) or the smoothing clock (SCLK) output of the jitter attenuator is
absent.
Chip Select for Microprocessor Interface (Active-Low).
CS loads data
into the device on its falling edge and latches the data on its rising edge. CS
is set low for hardware mode.
External Clock.
DS1/T1 clock signal (1.544 MHz
±
130 ppm) or CEPT/E1
clock signal (2.048 MHz
±
80 ppm) for transmit blue signal, jitter attenuator
calibration, and PLL acquisition aid. EXCLK must be an independent clock
to guarantee device performance for all specifications. This clock should be
continuously active (i.e., ungapped and unswitched) and void of jitter for the
above features to operate.
Transmit Clock.
DS1/T1 clock signal (1.544 MHz
±
130 ppm) or CEPT/E1
clock signal (2.048 MHz
±
80 ppm).
Transmit Positive Data.
DS1/T1 (1.544 Mbits/s) or CEPT/E1
(2.048 Mbits/s) positive bipolar data.
Transmit Negative Data.
DS1/T1 (1.544 Mbits/s) or CEPT/E1
(2.048 Mbits/s) negative bipolar data.
Receive Clock.
Recovered receive clock signal for the terminal equipment.
Receive Positive Data.
DS1/T1 (1.544 Mbits/s) or CEPT/E1
(2.048 Mbits/s) recovered positive data (NRZ).
Receive Negative Data.
DS1/T1 (1.544 Mbits/s) or CEPT/E1
(2.048 Mbits/s) recovered negative data (NRZ).
Transmit Bipolar Tip.
Positive bipolar transmit data.
5 V
±
5% Digital Supply.
The powerup rise time (0 V to 4.75 V) must be
less than 15 ms.
Transmit Bipolar Ring.
Negative bipolar transmit data.
Digital Ground.
14
OUT-LOS
O
15
CS
I
d
16
EXCLK
I
17
TCLK
I
18
TPDATA
I
19
TNDATA
I
20
21
RCLK
RPDATA
O
O
22
RNDATA
O
23
24
T2
V
DDD
O
—
25
26
R2
O
—
GND
D
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T-7290A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A-EL 制造商:未知廠家 制造商全稱:未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A--EL 制造商:Alcatel-Lucent 功能描述:DATACOM, PCM TRANSCEIVER, PDSO28
T7290A-EL 制造商:未知廠家 制造商全稱:未知廠家 功能描述:T7290A DS1/T1/CEPT Line Interface
T-7290A--EL-DT 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel
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