78P2241B
E3/DS3/STS-1
Transceiver
PIN DESCRIPTION: The 28-pin PLCC is compatible with 78P7200 (continued)
NAME
PIN
TQFP
PIN
PLCC
TYPE DESCRIPTION
GND
1, 3, 4, 7, 8,
12, 14, 19, 23,
24, 25, 29, 30,
31, 32, 36, 41,
43, 45, 46, 47,
48
2,4,6,8,22
P
Ground. Connecting all ground pins to a common ground
plane is recommended.
RFO
2
5
-
A resistor to GND sets the operational speed of the chip.
RFO= 5.23K for DS3, RFO=6.81K for E3 and RFO=4.53K
for STS-1.
LF1
26
27
19
20
-
I
Receiver PLL filter capacitor.
ENDEC
Encoder/Decoder: When set low, activates B3ZS/HDB3
ENDEC on receiver and transmitter logic signals.
Note 1: Pin type: I-input; I3-three level logic input; O-output; P-power supply. Advanced Data sheet pin
assignment and functions are subject to change.
Page: 5 of 23
©
2005 Teridian Semiconductor Corporation
Rev 5.0
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
