Renesas 89HPES24T3G2ZBAL, User Manual

Page: 96 / 165

IDT Configuration Registers
PES24T3G2 User Manual 8 - 14 February 22, 2012
Notes
BAR1 - Base Address Register 1 (0x014)
PBUSN - Primary Bus Number Register (0x018)
SBUSN - Secondary Bus Number Register (0x019)
SUBUSN - Subordinate Bus Number Register (0x01A)
SLTIMER - Secondary Latency Timer Register (0x01B)
Bit
Field
Field
Name
Type
Default
Value
Description
31:0 BAR RO 0x0 Base Address Register. Not applicable.
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 PBUSN RW 0x0 Primary Bus Number. This field is used to record the bus num-
ber of the PCI bus segment to which the primary interface of the
bridge is connected.
This field has no functional effect within the PES24T3G2 but is
implemented as a read/write register for software compatibility
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 SBUSN RW 0x0 Secondary Bus Number. This field is used to record the bus
number of the PCI bus segment to which the secondary interface
of the bridge is connected.
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 SUBUSN RW 0x0 Subordinate Bus Number. The Subordinate Bus Number regis-
ter is used to record the bus number of the highest numbered PCI
bus segment which is behind (or subordinate to) the bridge.
Bit
Field
Field
Name
Type
Default
Value
Description
7:0 SLTIMER RO 0x0 Secondary Latency Timer. Not applicable.