RELEASED
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
Data Sheet
PMC-2000164
ISSUE 3
ENHANCED TT1™ SWITCH FABRIC
Appendix A. General Packet/Frame
Formats
A.1 FRAME FORMATS - DATASLICE TO AND FROM ENHANCED PORT
PROCESSOR
Table 65 and Table 66 show the format of the Request/Grant from iDS and Data from oDS frames,
Table 67 shows the format of the Grant/Data to iDS frames, and Table 68 shows the format of the Control
to xDS frames.
Table 65. Request/Data from iDS Frame Format
Field
Size (bits)
Meaning
Reserved
VLD
1
1
1
1 if frame contains valid cell
Code Error
1 if frame contained 8b/10b error when received
Token
Request
1
1 if DS requests token to send data to EPP
Cell Data (includes LCS header)
Reserved
Cell Data
Reserved
4
48
8
Table 66. Data from oDS Frame Format
Field
Size (bits)
Meaning
Reserved
VLD
1
1
1 if frame is valid (used on oDS/oEPP only)
Cell Data (includes LCS header)
Reserved
Cell Data
Reserved
6
48
8
Table 67. Grant/Data to iDS Frame Format
Meaning
Field
Size (bits)
Reserved
8
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
317
PMC [ PMC-SIERRA, INC ]
