0x18, Subsystem vendor id (ssvid), 0x2c – Avago Technologies LSI8751D User Manual
Page 84: Register: 0x18, Register: 0x2c
3-20
PCI Functional Description
Register: 0x18
RAM Base Address Two (Memory) SCRIPTS RAM
Read/Write
BAR2
Base Address Register Two
[31:0]
This register holds the memory base address of the
4 Kbyte internal RAM. Read this register through the
register in the operating
register set when bit 3 of the
register is set.
Register: 0x2C
Subsystem Vendor ID (SSVID)
Read Only
SSVID
Subsystem Vendor ID
[15:0]
This register supports subsystem identification, which has
a default value of 0x0000 in the LSI53C875 and 0x1000
in the LSI53C875E (see
Section 4.1, “MAD Bus Program-
). To write to this register, connect a 4.7 k
Ω
resistor
between the MAD[6] pin and V
ss
and leave the MAD[4]
pin unconnected. The MAD[6] and MAD[4] pins have
internal pull-up resistors and are sensed shortly after the
deassertion of chip reset. In revisions before Revision G
of the LSI53C875, the MAD[6] and MAD[4] pins do not
support the SSID and SSVID configurations, and only
values of 0x0000 can be found in the Subsystem Data
register.
31
0
BAR2
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
15
0
SSVID
LSI53C875E
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
LSI53C875
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0