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L3M
TXC-03452B
DATA SHEET
RECEIVE AND TRANSMIT PHASE LOCKED LOOPS
144-Lead 208-Lead
QFP BGA
Lead No. Lead No.
Symbol
I/O/P
Type
Name/Function
RCAP
16
I
Analog Receiver Internal Phase Locked Loop Capacitor:
Optional capacitor used for an internal receive phase
locked loop. This lead must be left floating.
H2
TCAP
99
I
Analog Transmitter Internal Phase Locked Loop Capacitor:
Optional capacitor used for an internal transmit phase
locked loop. This lead must be left floating.
G15
RECEIVE DESYNCHRONIZER
144-Lead 208-Lead
Symbol
QFP
BGA
I/O/P
Type
Name/Function
Lead No. Lead No.
XOSCI
2
3
5
6
7
D2
D3
D4
E2
E1
I
CMOS External Oscillator Input: This input is connected to the
output of the external VCXO, as shown in the PLL connec-
tions diagram (Figure 32).
CTRL
O
I
CMOS Phase Detector Output: Normally connected to the exter-
4mA
nal low pass filter consisting of external components and
the internal amplifier.
AMPINN
AMPINP
AMPOUT
Analog Internal Amplifier - Negative Port Input: Negative port of
an internal amplifier which can be used in the desynchro-
nizer loop filter.
I
Analog Internal Amplifier - Positive Port Input: Positive port of
an internal amplifier which can be used in the desynchro-
nizer loop filter.
O
Analog Internal Amplifier - Output: Output of an internal ampli-
fier which can be used in the desynchronizer loop filter.
TXC-03452B-MB
Ed. 6, April 2001
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ETC [ ETC ]
