XRT59L921IB Exar Corporation, XRT59L921IB Datasheet - Page 3

• Manufacturer Part Number: XRT59L921IB
• Description: 21 CHANNEL E1 LIU
• Manufacturer: Exar Corporation

Specifications of XRT59L921IB

• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

REV. 1.2.1
GENERAL DESCRIPTION................................................................................................. 1
T
1.0 THE TRANSMIT SECTION .................................................................................................................. 15
2.0 THE RECEIVE SECTION ..................................................................................................................... 21
3.0 SHUTTING OFF THE TRANSMITTER ................................................................................................ 25
ABLE OF
F
A
P
RECEIVER ELECTRICAL CHARACTERISTICS ...................................................................................... 12
TRANSMITTER ELECTRICAL CHARACTERISTICS ............................................................................... 12
DC ELECTRICAL CHARACTERISTICS ................................................................................................... 13
AC ELECTRICAL CHARACTERISTICS.................................................................................................... 14
P
ALL ACTIVE
A
SYSTEM DESCRIPTION .......................................................................................................................... 15
M
TRANSFORMER RECOMENDATION ...................................................................................................... 23
APPLICATION INFORMATION................................................................................................................. 27
EATURES
PPLICATIONS
IN
ER CHANNEL POWER CONSUMPTION INCLUDING THE LINE POWER DISSIPATION
BSOLUTE
ORDERING INFORMATION .................................................................................................................... 2
1.1 THE TRANSMIT INPUT INTERFACE ............................................................................................................ 15
1.2 OPERATING THE TRANSMITTER IN THE CLOCK MODE .......................................................................... 15
1.3 THE PULSE SHAPING CIRCUIT ................................................................................................................... 17
1.4 INTERFACING THE TRANSMIT SECTIONS OF THE XRT59L921 TO THE LINE ....................................... 18
Transmit Transformer Recommendations ................................................................................................................. 19
The following Transformers are Recommended for Use........................................................................................... 20
2.1 INTERFACING THE RECEIVE SECTIONS TO THE LINE (TRANSFORMER COUPLING) ......................... 21
Receive Transformer Recommendations .................................................................................................................. 23
2.2 INTERFACING THE XRT59L921 RECEIVE SECTION TO THE LINE (CAPACITIVE COUPLING) ............. 23
2.3 THE RECEIVE EQUALIZER BOCK ............................................................................................................... 24
2.4 THE PEAK DETECTOR AND SLICER BLOCK ............................................................................................. 24
2.5 THE LOS DETECTOR BLOCK ...................................................................................................................... 24
2.6 LOS MUTE DESCRIPTION ............................................................................................................................ 25
2.7 THE RECEIVE OUTPUT INTERFACE BLOCK ............................................................................................. 25
AGNETIC
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
D
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
IGURE
ESCRIPTIONS
1.2.1 OPERATING THE TRANSMITTER IN THE CLOCKLESS MODE............................................................................. 16
1.2.2 SHUTTING OFF THE TRANSMITER.......................................................................................................................... 16
5. I
1. B
2. P
3. E1. ITU G.703 P
4. I
6. I
7. I
8. I
9. R
10. R
11. R
12. R
13. I
14. T
15. T
16. R
C
..................................................................................................................................................... 1
: ................................................................................................................................................. 14
M
S
IN THE
19
TIONS
CATIONS
24
NAL
ONTENTS
UPPLIER
LLUSTRATION ON HOW THE
AXIMUM
LLUSTRATION ON HOW THE
LLUSTRATION OF THE
LLUSTRATION OF HOW TO INTERFACE THE
LLUSTRATION OF HOW TO INTERFACE THE
LOCK
IN
ECOMMENDED
LLUSTRATION OF THE
............................................................................................................................................... 1
HE
RANSMIT
ECOMMENDED
ECOMMENDED
ECOMMENDED
ECEIVE
................................................................................................................................................................................ 25
O
(T
UT OF THE
B
XRT59L921),
D
EHAVIOR OF THE
RANSFORMER
(T
........................................................................................................................................ 3
IAGRAM OF THE
RANSFORMER
T
R
I
NFORMATION
T
IMING
ATINGS
IMING
............................................................................................................
S
XRT59L921 (
ULSE
S
75W C
120W T
CHEMATIC FOR
D
CHEMATIC FOR
D
IAGRAM
WHEN OPERATING IN THE
IAGRAM
-C
ITU-T G.703 P
..................................................................................................................... 14
T
S
OUPLING
-C
EMPLATE FOR
LOS O
APACITIVE
XRT59L921 ............................................................................................................................. 1
IGNAL
WISTED
OUPLING
T
XRT59L921 S
........................................................................................................................................... 26
.............................................................................................................. 20
ERMINAL
......................................................................................................................................... 26
TABLE OF CONTENTS
BOTTOM VIEW
L
UTPUT
) .................................................................................................................................. 21
EVELS THAT THE
I
NTERFACING THE
P
I
NTERFACING THE
) .............................................................................................................................. 22
C
AIR
OUPLING
E
ULSE
I
T
QUIPMENT SHOULD APPLY DATA TO THE
NDICATOR
C
RANSMITTER
APACITIVE
T
T
AMPLES THE DATA ON THE
T
RANSMIT
RANSMIT
).................................................................................................................. 2
EMPLATE FOR
C
A
PPLICATION
LOCKLESS
,
R
IN RESPONSE TO THE
R
ECEIVER
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
C
R
S
S
ECEIVE
I
O
OUPLING
ECTIONS OF THE
ECTIONS THE
ECEIVE
UTPUT
M
E1 A
........................................................................................... 23
S
S
ODE
........................................................................................ 13
S
ECTIONS
ECTIONS OF THE
A
ECTIONS OF THE
PPLICATIONS
PPLICATION
.................................................................................. 17
XRT59L921
T
X
(
XRT59L921
POS_
WITHIN
L
OSS OF
.................................................................. 23
................................................................ 18
T
N AND
XRT59L921
RANSMIT
XRT59L921)
XRT59L921
,
S
TO THE
TRANMISSION AND RECEIVE PATHS
IGNAL
TO THE
T
X
NEG_
S
,
L
AND THE
ECTION OF A GIVEN
INE
L
TO THE
WILL DECLARE AND CLEAR
INE
TO THE
N INPUT PINS
(
FOR
(
FOR
R
120W A
L
ESTORATION OF THE
INE FOR
L
INE FOR
75W A
XRT59L921
................... 16
PPLICATIONS
C
75W A
HANNEL
PPLICATIONS
120W A
PPLICA
(
WITH
PPLI
LOS
S
)19
I
IG
)
-
-
-
-