PM4341AT1XC
DATA SHEET
PMC-900602
ISSUE 7
T1 FRAMER/TRANSCEIVER
Pin
Pin No.
Name
Type
PQFP PLCC Function
RRC
I/O
52
54
Receive Peak Hold R-C Network (RRC).
This analog bidirectional pin is connected
to an external parallel resistor/capacitor
network to RAVS. This network is
necessary to the operation of the internal
peak detector that tracks the incoming
signal level.
RAVD
Power 55
57
Receive Analog Power (RAVD). This pin
provides the +5V supply to the receive
analog line interface. If the receive
analog line interface is not used, the
power consumption of the T1XC can be
reduced by connecting the RAVD pin to
the analog ground pin, RAVS. RAVD
must be connected to a common, well
decoupled +5 VDC supply together with
the VDDO[2:0] and VDDI[1:0] pins. Care
must be taken to avoid coupling noise
induced on the VDDO and VDDI pins into
the RAVD pin.
RAVS
Ground 54
56
41
Receive Analog Ground (RAVS). This pin
provides the ground supply to the receive
analog line interface. RAVS must be
connected to a common ground together
with the VSSO[2:0] and VSSI[1:0] pins.
Care must be taken to avoid coupling
noise induced on the VSSO and VSSI
pins into the RAVS pin.
RCLKO
Output 36
Recovered PCM Clock Output (RCLKO).
This output signal is the recovered 1.544
MHz clock, synchronized to the XCLK
signal. The RCLKO signal is recovered
from the received analog inputs (if the
interface is powered up), from the RDP
and RDN inputs (if the input format is
dual-rail RZ), or from the RCLKI input (if
the input format is NRZ).
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
17
PMC [ PMC-SIERRA, INC ]
