Achronix ACE Version 5.0 User Manual
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Chapter 3. Concepts
Chain Offset of Target
bitstream chain offset
Specifies the offset of the target
device on the JTAG scan chain for
multi-device chains. Setting this to 0
selects the first device on the chain, 1
selects the second device on the
chain, and so on.
IR Bits Before Target
bitstream preir padding
Specifies the total number of
Instruction Register bits on the JTAG
scan chain prior to the target device
Instruction Register. This option is
used for multi-device scan chains in
order to pad the IR chain properly
with 1s to put other devices in
bypass mode.
IR Bits After Target
bitstream postir padding
Specifies the total number of
Instruction Register bits on the JTAG
scan chain after the target device
Instruction Register. This option is
used for multi-device scan chains in
order to pad the IR chain properly
with 1s to put other devices in
bypass mode.
FPGA Download Implementation Options
Option
TCL Option
Description
Connection Type
download connection
This option specifies the connection
type (single or multiple) for the
Bitporter pod used during FPGA
download. If ”single” is used, it is
assumed that only 1 pod is connected
to the system. Therefore, the pod
name is not used and the first pod
found will be used for download. If
”multiple” is used, then the pod
name must be specified since there
are multiple pods connected to the
system.
Pod Names
download pod names
Specifies the Bitporter pod(s) for
programming. Pod names are listing
with comma delimitation, for
example,
usb12345, net10234
.
This option does not affect pod
selection in the
or
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UG001 Rev. 5.0 - 5th December 2012