STANDARD PRODUCT
PM5365 TEMAP
DATASHEET
PMC-1991148
ISSUE 3
HIGH DENSITY VT/TU MAPPER
AND M13 MULTIPLEXER
Pin Name
Type Pin Function
No.
LAC1J1V1
Output AA11
Line Add Bus Composite Timing Signal
(LAC1J1V1). The Add bus composite timing signal
identifies the frame, payload and tributary multiframe
boundaries on the Line Add Data bus LADATA[7:0].
LAC1J1V1 pulses high with the Line Add Payload
Active signal LAPL set low to mark the first STS-1
(STM-0/AU3) identification byte or equivalently the
STM identification byte C1. Optionally the LAC1J1V1
signal pulses high with LAPL set high to mark the path
trace byte J1. Optionally the LAC1J1V1 signal pulses
high on the V1 byte to indicate tributary multiframe
boundaries.
In a system with multiple TEMAPs sharing the same
Line Add bus only one device should have LAC1J1V1
connected. All devices must be configured via the
LOCK0 bits in the Master SONET/SDH Configuration
and TTMP Telecom Interface Configuartion registers
for the same J1 location corresponding to a pointer
offset of 0 or 522.
LAC1J1V1 is updated on the rising edge of LREFCLK.
LAOE
Output AB11
Line Add Bus Output Enable (LAOE). The Add Bus
output enable signal is asserted high whenever the
Line Add Bus is being driven which is co-coincident
with the Line Add bus outputs coming out of tri-state.
This pin is intended to control an external multiplexer
when multiple TEMAPs are driving the telecom Add
bus during their individual tributaries. This same
function is accomplished with the Add bus tristate
drivers but increased tolerance to tributary
configuration problems is possible with an external
mux. This output is controlled via the LAOE bit in the
TTMP Tributary Control registers.
LAOE is updated on the rising edge of LREFCLK.
Proprietary and Confidential to PMC-Sierra, Inc. and for its Customers’ Internal Use
39
PMC [ PMC-SIERRA, INC ]
