TYAN TOMCAT IIIS D User Manual page 54

Single s1563s/dual s1563d pentium class 430 hx 75mhz thru 200mhz pci-isa system board
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Memory Address Drive Strength
This setup option allows the selection of memory address output buffer
drive affecting the MA(memory address) and MWE#(memory write
enale)pins. The default is 8ma/8ma.
NA Disable (NAD) For External Cache
When enabled the NA#(next address) pin is never asserted, otherwise
the assertion is dependent upon the cache type and size.
The default is enabled.
Peer Concurrency
When enabled the CPU will be allowed to run DRAM/L2 cycles when
non-PHLD( PCI masters are running non-locked cycles targeting PCI
peer devices. The default is enabled.
ECC Test
This is a test mode described in the 430HX( Xcellerated Controller)
external design specification. This should be enabled only when using
ECC memory.
The default is disabled.
DRAM Data Integrity Mode
This option allows the selection of the DRAM error detection. Either
parity or ECC modes are supported. The default is parity.
SERR# (System Error)Output Type
This allows the selection of the output type of the SERR# signal. Valid
options are Open drain and Normal (actively driven high). The default
is normal.
SERR#(System Error) Duration Mode
This option allows the determination of the SERR# output's duration
when it is asserted. The modes are Pulse (asserted for 1PCLK), or
Level (asserted until the error flags are cleared).
The default is Pulse.
SERR# (System Error)Enable
This is the master enable bit for SERR# generation. The default is
disabled.
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