PM5366-PI PMC-Sierra, Inc., PM5366-PI Datasheet - Page 228

• 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
PROPRIETARY AND CONFIDENTIAL
The LAC1 signal is updated on the rising edge of LREFCLK. It is output during
when the TEMAP-84 is outputing valid tributary data onto the ADD bus. It is
asserted high for all bytes making up a tributary and is asserted low during
overhead bytes.
Figure 56
LADATA[7:0]
Figure 57 shows the function of the TEMAP-84 telecom ADD bus when operating
in AU4 mode. In AU4 mode, the position of the single J1 byte and the VC4 is
implicitly defined by the LAC1 byte position. The VC4 is defined to be aligned to
the AU4 transport envelope such that the J1 byte occupies the first available
payload byte after the C1 byte. No pointer justification events take place on the
ADD bus. LAC1J1V1 pulses high to mark the first C1 byte, the J1 byte and the
third byte after J1 of the first tributary in the AU4 stream. LAPL identifies the
payload bytes on LADATA[7:0].
LREFCLK
LAC1J1V1
LAC1
LAOE
LAPL
V1 byte VT #1, STS-1 #1
V1 byte VT #1, STS-1 #2
Implicit location
of STS-1 SPE
J1 bytes
V1 byte VT #1, STS-1 #3
A2 C1 C1 C1
- Telecom ADD Bus Timing - Locked STS-1 SPEs / AU3 VCs
ISSUE 1
J1 J1 J1 V1 V1 V1 V1 V1 V1 V1
V1 bytes VT #2
216
No stuff events possible
••••
H1
H1 H1 H2 H2 H2 H3
HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER
J2 byte VT #1, STS-1 #1
V5 byte VT #1, STS-1 #2
H3
H3
AND M13 MULTIPLEXER
PM5366 TEMAP-84
J2
V5