IDT 89HPES16T4G2, Preliminary User'S Manual

Page: 91 / 149

IDT Configuration Registers
PES16T4G2 User Manual 8 - 13 January 28, 2013
Notes
HDR - Header Type Register (0x00E)
BIST - Built-in Self Test Register (0x00F)
BAR0 - Base Address Register 0 (0x010)
BAR1 - Base Address Register 1 (0x014)
PBUSN - Primary Bus Number Register (0x018)
SBUSN - Secondary Bus Number Register (0x019)
Bit
Field
Field
Name
Type Default
Value
Description
7:0 HDR RO 0x01 Header Type. This value indicates a type 1 header with a single
function bridge layout.
Bit
Field
Field
Name
Type Default
Value
Description
7:0 BIST RO 0x0 BIST. This value indicates that the bridge does not implement
BIST.
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
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 number
of the PCI bus segment to which the primary interface of the bridge
is connected.
This field has no functional effect within the PES16T4G2 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 num-
ber of the PCI bus segment to which the secondary interface of the
bridge is connected.