0x18, Subsystem vendor id (ssvid), 0x2c – Avago Technologies LSI53C825AE User Manual
Page 98: Register: 0x18, Register: 0x2c
4-10
Registers
Register: 0x18
RAM Base Address Two (Memory) SCRIPTS RAM
Read/Write
BART
Base Address Register Two
[31:0]
This register holds the memory base address of the
4 Kbyte internal RAM. The user can 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 0x1000 in the LSI53C825AE
(
Section 3.2, “MAD Bus Programming”
). 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 Rev. G of the LSI53C825A, 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
BART
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
LSI53C825AE
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
LSI53C825A
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0