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PM5347 Datasheet(PDF) 241 Page - PMC-Sierra, Inc

Part # PM5347
Description  SATURN USER NETWORK INTERFACE PLUS
PDF  302 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM5347 Datasheet(HTML) 241 Page - PMC-Sierra, Inc

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PM5347 S/UNI-PLUS
DATA SHEET
PMC-941033
ISSUE 6
SATURN USER NETWORK INTERFACE PLUS
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
225
H4:
The multiframe indicator byte is a payload specific byte, and
is not used for ATM payloads. This byte is forced to 0x00 in
the transmit direction, and is ignored in the receive direction.
Z3 - Z5:
The path growth bytes provide three unused bytes for future
use.
12.6
Cell Data Structure
ATM cells may be passed to/from the S/UNI-PLUS using a twenty-seven word
data structure or a fifty-three word data structure. These data structures are
shown in Figure 15 and Figure 16.
Figure 15
- 16-bit Wide, 27 Word Structure
Bit 15
Bit 0
H1
H2
H3
H4
HCS
STATUS/CONTROL
H5
PAYLOAD1
PAYLOAD2
Bit 8
Bit 7
PAYLOAD3
PAYLOAD4
PAYLOAD5
PAYLOAD6
Word 1
Word 2
Word 3
Word 4
Word 5
Word 6
PAYLOAD47
PAYLOAD48
Word 27
The 16-bit SCI-PHY compliant data structure is selected when the BUS8 input is
tied low. Bit 15 of each word is the most significant bit (which corresponds to the
first bit transmitted or received). The header check sequence octet (HCS) is
passed through this structure. The start of cell indication input and output (TSOC



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