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參數資料
型號： T7698
廠商： Lineage Power
英文描述： Quad T1/E1 Line Interface and Octal T1/E1 Monitor(四T1/E1線接口和八T1/E1監控器)
中文描述： 四T1/E1線路接口和八路的T1/E1監視器（四個T1/E1線接口和八T1/E1的監控器）
文件頁數： 1/112頁
文件大小： 1359K
代理商： T7698
Data Sheet
January 1999
T7698 Quad T1/E1 Line Interface and Octal T1/E1 Monitor
Features
I
Integrated quad T1/E1 line interface and octal T1/
E1 receive frame monitor with HDLC processor
provides system QoS capabilities.
I
Hardware and software reset options.
I
3-state outputs.
I
0.35 μm, low-power CMOS technology.
I
Compliant with:
AT&T
CB119 (10/79)
Bellcore
TR-54016 (89)
TR-TSY-000170 (10/97)
TR-TSY-000009 (5/86)
GR-499-CORE (12/95)
GR-253-CORE (12/95)
ANSI
T1.102 (93)
T1.231 (93)
T1.403 (95)
ITU-T
G.703 (88)
G.704 (91)
G.706 (91)
G.732 (88)
G.735-9 (88)
G.775 (11/94)
G.823-4 (3/93)
G.826 (11/93)
I.431 (3/93)
ETSI
TBR 12 (12/93)
TBR 13 (1/96)
I
–40 °C to +85 °C operating temperature range.
I
Fine-pitch (25 mil spacing) surface-mount pack-
age, 100-pin BQFP
T1/E1 Line Interface Features
I
Transmitter includes transmit encoder (B8ZS or
HDB3), pulse shaping, and line driver.
I
Compatible with the Lucent Technologies Micro-
electronics Group T7690 line interface.
I
Five pulse equalization settings for template com-
pliance at DSX cross connect.
I
Receive includes equalization, digital clock and
data recovery (immune to false lock), and receive
decoder (B8ZS or HDB3).
I
CEPT/E1 interference immunity as required by
G.703.
I
Transmit jitter <0.02 UI.
I
Receive generated jitter <0.05 UI.
I
Jitter attenuator selectable for use in transmit or
receive path. Jitter attenuation characteristics are
data pattern independent.
I
For use with 100
DS1 twisted-pair, 120
E1
twisted-pair, and 75
E1 coaxial cable.
I
Common transformer for transmit/receive.
I
Analog LOS alarm for signals less than –18 dB for
greater than 1 ms or 10 bit symbol periods to
255 bit symbol periods (selectable).
I
Digital LOS alarm for 100 zeros (DS1) or 255 zeros
(CEPT).
I
Diagnostic loopback modes.
I
Ultralow power consumption.
T1/E1 Frame Monitor Features
I
Framing formats
— DS1 extended superframe (ESF)
— DS1 superframe (SF): D4 (domestic, Japanese);
SLC
-96; T1DM DDS with FDL access
— Compliant to ITU-CEPT framing recommenda-
tion:
1. CEPT basic frame format
2. CEPT with CRC-4 multiframe search
algorithm and 100 ms timer
3. CEPT with CRC-4 multiframe search
algorithm and 400 ms timer for interworking
of CRC-4 and non-CRC-4 equipment
4. CEPT with loss of frame condition upon
detection of
≥
915 CRC-4 submultiframe
errors out of 1000 CRC-4 submultiframe
checks
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