PM5366-PI PMC-Sierra, Inc., PM5366-PI Datasheet - Page 64

• Manufacturer Part Number: PM5366-PI
• Description: HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER AND M13 MULTIPLEXER
• Manufacturer: PMC-Sierra, Inc.

PRELIMINARY
DATASHEET
PMC-2010672
Pin Name
SDV5
SBIACT
SBIDET[0]
SBIDET[1]
PROPRIETARY AND CONFIDENTIAL
Type
Output
Tristate
Output A3
Input
ISSUE 1
Pin
No.
C8
A15
B15
Function
System Drop Bus Payload Indicator (SDV5). The
payload indicator locates the position of the floating
payloads for each tributary within the SBI bus
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 TEMAP-84 only drives the payload Indicator signal
during the tributary timeslots assigned to this device.
SDV5 is updated on the rising edge of SREFCLK.
SBI Output Active (SBIACT). The SBI Output Active
indicator is high whenever the TEMAP-84 is driving the
SBI drop bus signals. This signal is used by other
TEMAP-84s 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.
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.
These inputs only have effect when the SBI bus is
configured for 19.44MHz (i.e. S77 is low).
A collision is detected when either of SBIDET[1:0]
signals are active concurrently with this device driving
SBIACT. When collisions occur the SBI drivers are
disabled and an interrupt is generated to signal the
collision.
52
HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER
AND M13 MULTIPLEXER
PM5366 TEMAP-84