Renesas 89HPES24T3G2ZBAL, User Manual

Page: 133 / 165

IDT Configuration Registers
PES24T3G2 User Manual 8 - 51 February 22, 2012
Notes
VCR0CAP- VC Resource 0 Capability (0x210)
VCR0CTL- VC Resource 0 Control (0x214)
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 PARBC RO Upstream:
0x3
Downstream:
0x1
Port Arbitration Capability. This field indicates the type of port
arbitration supported by the VC. Each bit corresponds to a Port
Arbitration capability. When more than one arbitration scheme is
supported, multiple bits may be set.
The upstream port supports hardware fixed round robin and
weighted round robin with 32 phases.
Downstream ports support only hardware fixed round robin.
bit 0 - hardware fixed round robin
bit 1 - weighted round robin with 32 phases
bit 2 - weighted round robin with 64 phases
bit 3 - weighted round robin with 128 phases
bit 4 - time-based weighted round robin with 128 phases
bit 5 - weighted round robin with 256 phases
13:8 Reserved RO 0x0 Reserved field.
14 APS RO 0x0 Advanced Packet Switching. Not supported.
15 RJST RO 0x0 Reject Snoop Transactions. No supported for switch ports.
22:16 MAXTS RO 0x0 Maximum Time Slots. Since this VC does not support time-
based WRR, this field is not valid.
23 Reserved RO 0x0 Reserved field.
31:24 PATBLOFF RO Upstream:
0x2
Downstream:
0x0
Port Arbitration Table Offset. This field contains the offset of
the port arbitration table from the base address of the Virtual
Channel Capability structure in double quad words (16 bytes).
The upstream port has a port arbitration table. Downstream ports
do not have a port arbitration table.
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 TCVCMAP bit 0 RO
bits 1
through
7
RW
0xFF TC/VC Map. This field indicates the TCs that are mapped to the
VC resource. Each bit corresponds to a TC. When a bit is set, the
corresponding TC is mapped to the VC.
15:8 Reserved RO 0x0 Reserved field.