PM4328-PI PMC-Sierra, Inc., PM4328-PI Datasheet - Page 59
PM4328-PI
Manufacturer Part Number
PM4328-PI
Description
Framer, T1|E1|T3 Standard Format, 324-BGA
Manufacturer
PMC-Sierra, Inc.
Datasheet
1.PM4328-PI.pdf
(250 pages)
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STANDARD PRODUCT
DATASHEET
PMC-2011596
Pin Name
SBIACT
CLK52M
SBIDET[0]
SBIDET[1]
PROPRIETARY AND CONFIDENTIAL
Type
Output A8
Input
Input
ISSUE 1
Pin
No.
P3
C8
A7
Function
structure. Timing differences between the tributary
timing and the synchronous SBI bus are indicated by
adjustments of this payload indicator relative to the
fixed SBI bus structure.
All timing adjustments indicated by this signal are
accompanied by appropriate adjustments in the SDPL
signal.
The TECT3 only drives the payload Indicator signal
during the tributary timeslots assigned to this device.
SDV5 is updated on the rising edge of SREFCLK.
This signal shares a pin with IFP[28].
SBI Output Active (SBIACT). The SBI Output Active
indicator is high whenever the TECT3 is driving the SBI
drop bus signals. This signal is used by other TECT3s
or other SBI devices to detect SBI configuration
problems by detecting other devices driving the SBI
bus during the same tributary as the device listening to
this signal.
This output is updated on the rising edge or SREFCLK.
52MHz Clock Reference (CLK52M). The 52Mhz clock
reference is used to generate a gapped DS3 clock
when receiving a DS3 from the SBI bus interface. This
clock has two nominal values.
The first is a nominal 51.84MHz 50% duty cycle clock.
The second is a nominal 44.928MHz 50% duty cycle
clock.
When this clock is not used this input must be
connected to ground.
SBI Bus Activity Detection (SBIDET[1:0]). The SBI
bus activity detect input detects tributary collisions
between devices sharing the same SBI bus. Each SBI
device driving the bus also drives an SBI active signal
(SBIACT). This pair of activity detection inputs
monitors the active signals from two other SBI devices.
When unused this signal should be connected to
ground.
46
HIGH DENSITY T1/E1 FRAMER
AND M13 MULTIPLEXER
PM4328 TECT3
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