IDT 89HPES16T4AG2, User Manual

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IDT Configuration Registers
PES16T4AG2 User Manual 8 - 55 May 23, 2013
Notes
Power Budgeting Enhanced Capability
PWRBCAP - Power Budgeting Capabilities (0x280)
PWRBDSEL - Power Budgeting Data Select (0x284)
19:16 PHASE28 RW 0x1 Phase 28. This field contains the port ID for the corresponding
port arbitration period.
23:20 PHASE29 RW 0x2 Phase 29. This field contains the port ID for the corresponding
port arbitration period.
27:24 PHASE30 RW 0x3 Phase 30. This field contains the port ID for the corresponding
port arbitration period.
31:28 PHASE31 RW 0x4 Phase 31. This field contains the port ID for the corresponding
port arbitration period.
Bit
Field
Field
Name
Type
Default
Value
Description
15:0 CAPID RWL 0x0 Capability ID. The value of 0x4 indicates a power budgeting
capability structure.
If the power budgeting capability is used, then this field should be
initialized with data from a serial EEPROM.
19:16 CAPVER RWL 0x0 Capability Version. The value of 0x1. indicates compatibility
with version 1 of the specification.
If the power budgeting capability is used, then this field should be
initialized with data from a serial EEPROM.
31:20 NXTPTR RWL 0x0 Next Pointer.
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 DVSEL RW 0x0 Data Value Select. This field selects the Power Budgeting Data
Value (PWRBDVx) register whose contents are reported in the
Data (DATA) field of the Power Budgeting Data (PWRBD) regis-
ter.
Setting this field to a value greater than 7, causes zero to be
returned in the DATA field of the PWRBD register.
31:8 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type
Default
Value
Description