STANDARD PRODUCT
PM5365 TEMAP
DATASHEET
PMC-1991148
ISSUE 3
HIGH DENSITY VT/TU MAPPER
AND M13 MULTIPLEXER
SDV5
Output A9
Tristate
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 only drives the payload Indicator signal
during the tributary timeslots assigned to this device.
SDV5 is updated on the rising edge of SREFCLK.
SBIACT
Output A8
SBI Output Active (SBIACT). The SBI Output Active
indicator is high whenever the TEMAP is driving the SBI
drop bus signals. This signal is used by other TEMAPs
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.
SBIDET[0]
SBIDET[1]
Input C8
A7
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.
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.
These signals are sampled on the rising edge of
SREFCLK.
SBIDET[1] is shared with serial interface signal ED[7].
Microprocessor Interface
Proprietary and Confidential to PMC-Sierra, Inc. and for its Customers’ Internal Use
49
PMC [ PMC-SIERRA, INC ]
