LSISAS1068 LSI, LSISAS1068 Datasheet - Page 48

• Manufacturer Part Number: LSISAS1068
• Manufacturer: LSI

Specifications of LSISAS1068

• Lead Free Status / RoHS Status: Not Compliant

2-22
The Fusion-MPT firmware for the LSISAS1068 supports all CFI flash
parts and a limited set of non-CFI flash parts. Contact the LSI Logic or
OEM representative for a current list of supported non-CFI flash parts.
Figure 2.5
Figure 2.5
MAD[31:24]
FLASH_CS/
Flash Signature Recognition – The LSISAS1068 implements a flash
ROM signature recognition mechanism to determine whether the flash
ROM contains a valid image. The flash ROM can be present and not
contain a valid image either before its initial programming or during board
testing.
The first access to the flash ROM is a 16-byte burst read beginning at
flash ROM address 0x000000. The LSISAS1068 compares the values
read to the flash ROM signature values in
values match, the LSISAS1068 performs the instruction located at flash
ROM address 0x000000. If the signature values do not match, the
LSISAS1068 records an error and ignores the flash ROM instruction. The
flash ROM signature does not include the first 3 bytes of flash ROM
memory because these bytes contain a branch offset instruction.
Functional Description
Copyright © 2004, 2005 by LSI Logic Corporation. All rights reserved.
MAD[23:16]
MAD[15:8]
MAD[7:0]
MOE[1]/
BWE[3]/
Uniform sector and/or boot block sector
64 Kbyte maximum sector size
Intel/Sharp extended command set and/or AMD/Fujitsu extended
command set programming algorithms
provides a diagram of a flash ROM configuration.
Flash ROM Block Diagram
Middle Address
Lower Address
Upper Address
XM_Address[15:8]
XM_Address[23:16]
XM_Address[7:0]
XM_Data[7:0]
CE/
OE/
WE/
Table
2.2. If the signature