Datasheet

DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
83 of 124
Figure 15-1. Basic External Analog Connections
Figure 15-2. Optional Crystal Connection
RTIP
RRING
TTIP
TRING
E1 Receive
Line
E1 Transmit
Line
DS21354/DS21554
0.47
(nonpolarized)
Rr
0.1mF
Rt
Rt
1 : 1
N : 1
(See Note 1)
Rr
2.048MHz
MCLK
DVDD
DVSS
0.1
RVDD
RVSS
0.1
TVDD
TVSS
0.1
VDD
0.01
10
+
NOTE 1: ALL CAPACITORS VALUES ARE IN mF.
NOTE 2: 10mF CAPACITOR ON TVDD IS OF TANTALUM CONSTRUCTION.
NOTE 3: SEE TABLE 15-3 FOR TRANSFORMER SELECTION.
XTALD
DS21354
/
DS21554
C1
C2
2.048MHz
MCLK