XR-T7296 Datasheet, PDF (13/16 Pages) Exar Corporation – DS3/STS-1, E3 Integrated Line Transmitter

XR-T7296
V_CC
INPUT
SIGNAL
B1
EXTERNAL
CLOCK
B2
OUTPUTS
RECEIVER
MONITOR
RLOS
RLOL
RI
EC
QT
B
S1
5 678
L
O
SW DIP-4
S
T
H
R
4321
TP
TP
135 7
C2
0.01µF
R2
75
U1
XR-T7295
8
RLOL
7 _RLOS
2
R_IN
LOSTHR ¹⁹
REQB ¹⁸
ICT/
RCLK
17
14
RNDATA ¹⁵
RPDATA ¹⁶
3
TMC1
R21
22K
24 6 8
R1 50
R7 39
R8 39
R10 39
P2
GND
6
13
TMC2
EXCLK
R5 50
B5
R6
4
LPF1
75
C3
0.1µF
5
LPF2
1
GNDA
10
GNDC
9
GNDD
TCLK
B4
TNDATA
FERRITE BEAD
V
D
D
A
20
BT1
VV
DD
DD
CD
11
C6
21
B3
TPDATA
C4
0.1µF
0.1µF
P1
V_CC RX
C7
0.1µF
+ E1
22µF
DMO
BPV
TRANSMITER
MONITOR
OUTPUTS
V_CC
2134 5678
U2
XR-T7296
3
LLOOP
2
RLOOP
DS3,STS-1/E3/
4
1
RCLK
TAOS ⁵
28 _RNDATA
ICT/ ²⁶
27 _RPDATA
TXLEV ²⁵
ENCODIS ¹¹
DECODIS ¹²
9 _TCLK
17
RCLKO
16
RPOS
15
RNEG
14
RNRZ
R22
22K
1 1111119
5 64 3 2 1 0
S2
1
2
3
4
5
6
7
8
SW DIP-8
16 _LLOOP
15 _RLOOP
14 _T3/E3
13
12 ^TAOS
11 ^TXLEV
10 ^ICT
9 ^ENCODIS
DECODIS
RCLKO
RPOS
RNEG
RNRZ
RECEIVER
OUTPUTS
8 _TNDATA
7 _TPDATA
18 _DMO
13 _BPV
V
D
D
A
24
BT2
TRING ²²
R4
36
T1
B6
TTIP
23
TTIP
R15
MRING ¹⁹
R16
20
MTIP
10
GNDD
GNDA ²¹
R3
270
270
36
PE65966
TRING
TRANSFORMER # PULSE ENGINEERING
PE 65966
PE 65967 IN SURFACE MOUNT
V
D
D
D
6
C8
0.1µF
P3
V_CC TX
FERRITE BEAD # FAIR RITE 2643000101
C9 FERRITE BEAD
0.1µF
+E2
22µF
C5
0.1µF
Figure 9. Evaluation System Schematic
Rev. 2.01
13