LSISAS1064 LSI, LSISAS1064 Datasheet - Page 47

• Manufacturer Part Number: LSISAS1064
• Manufacturer: LSI

Specifications of LSISAS1064

• Lead Free Status / RoHS Status: Not Compliant

The Fusion-MPT firmware for the LSISAS1064 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
Flash Signature Recognition – The LSISAS1064 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 LSISAS1064 compares the values
read to the Flash ROM signature values in
values match, the LSISAS1064 performs the instruction located at Flash
ROM address 0x000000. If the signature values do not match, the
LSISAS1064 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.
Table 2.2
External Memory Interface
Copyright © 2003–2005 by LSI Logic Corporation. All rights reserved.
MAD[31:24]
FLASH_CS/
MAD[23:16]
MAD[15:8]
Flash ROM Address
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
Bytes [3:0]
provides a diagram of a Flash ROM configuration.
Flash ROM Block Diagram
Flash ROM Signature Value
Middle Address
Lower Address
Upper Address
0xEA
Flash ROM Signature Values
XM_Address[15:8]
XM_Address[23:16]
XM_Address[7:0]
XM_Data[7:0]
CE/
OE/
WE/
XX
Table
2.2. If the signature
XX
XX
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