JTAG-Booster for AMD élanSC520
/BOOTCS /ROMCS1 /ROMCS2
This options may be used to specify one or more chip select signals to the flash
memory. The used chip selects must be defined as output and inactive in the
initialization file. (See chapter 1.6 “Initialization file JTAGEL5.INI”.)
Default:
/BOOTCS
/NOCS
Use this option to switch off all chip select signals. This may be necessary if the
device's chip select is generated via a normal decoder instead of using the AMD
élanSC520 chip select unit.
/8BIT /16BIT
Specifies the bus interface to the target device. You can speed up autodetection,
if you specify the correct bus interface width.
/32L /32H
The JTAG-Booster is not able to handle the interface to a dual 16bit ROM (32bit-
ROM). With this two options you can select one 16 bit half of a 32bit-ROM. The
option /32L selects the low word and /32H selects the high word. 32 bit flash
eproms are always connected to the SDRAM data bus. It is not necessary to
specify the option /MBUS if the option /32L or /32H is used. Do not specify the
option /8BIT together with /32L or /32H.
/MBUS
With this option the SDRAM data bus (MDx bus) is used instead of the general
purpose data bus (GPDx bus) for accesses to flash eproms.
/WRSETUP
By default write cycles to the Flash EPROM start with address, data and write
strobe set at the same time. With the option /WRSETUP you can force the
program to generate a setup time for address and data with respect to the write
strobe.
32
JTAGEL5d.doc
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