LSISAS1068E LSI, LSISAS1068E Datasheet - Page 15

• Manufacturer Part Number: LSISAS1068E
• Manufacturer: LSI

Specifications of LSISAS1068E

• Lead Free Status / RoHS Status: Not Compliant

SIO Signals
DB08-000274-03
MOE[1:0]/
MWE[1:0]/
BWE[3:0]/
NVSRAM_CS/
PBSRAM_CS/
FLASH_CS/
This section describes the SIO A and SIO B signals. SIO A is associated
with Quad Port 0. SIO B is associated with Quad Port 1.
SIO_CLK_A
SIO_CLK_B
LSISAS1068E PCI Express to 8-Port Serial Attached SCSI Controller 15 of 30
October 2006 - Version 2.1
Flash Chip Select
Memory Output Enables
Asserting these active LOW signals enable the selected
PBSRAM, flash ROM, or NVSRAM device to drive data.
MOE1/ enables PBSRAM and flash ROM devices.
MOE0/ enables NVSRAM devices. MOE[1:0]/ allow
interleaved PBSRAM configurations.
Memory Write Enables
The LSISAS1068E uses these active LOW bank write
signals for interleaved PBSRAM configurations.
Memory Byte Write Enables
Asserting these active LOW, byte-lane write signals
enable partial word writes to the PBSRAM. BWE[3]/
and BWE[2]/ enable partial word writes to the flash ROM
and the NVSRAM if FLASH_CS/ or NVSRAM_CS/
is asserted.
NVSRAM Chip Select
Asserting this active LOW signal selects the NVSRAM
device.
RAM Chip Select
Asserting this active LOW signal selects the PBSRAM
devices. The LSISAS1068E uses the PBSRAM to sup-
port firmware download boot and SLDC applications.
Asserting this active LOW signal selects the flash ROM.
The LSISAS1068E maps flash ROM address space into
system memory space.
SIO Clock
This signal provides the clock signal for SIO A.
SIO Clock
This signal provides the clock signal for SIO B.
Copyright © 2004–2006 by LSI Logic Corporation. All rights reserved.
Input/Output
Input/Output
Output
Output
Output
Output
Output
Output