User Manual For Cyclone LC Programmers
104
JTAG communications using the :USESWD 0 command/value.
n
Specifies the index number of a device in the daisy chain.
For more information on how to program or debug with a daisy chain setup, read:
http://www.pemicro.com/blog/index.cfm?post_id=136
9.2.2.6.5 :JTAGPREIR n
Processors: ARM, MAC7xxx
Every JTAG device has an IR register that is a certain width in bits. In the daisy chain the number
of Pre-IR bits is the sum of all of the IR registers between your device and the TDO pin.
Note:
This command is mandatory for JTAG daisy chain configurations. It is also important to specify
JTAG communications using the :USESWD 0 command/value.
n
Specifies the total length of IR registers following the target device. The first device in
the daisy chain is index 0.
For more information on how to program or debug with a daisy chain setup, read:
http://www.pemicro.com/blog/index.cfm?post_id=136
9.2.2.6.6 :RSTLOWPOSTSAP
Processors: All
Drives the RESET signal LOW before and after SAP operations.
9.2.2.7
Connection Related (S08, S12, ColdFire V1, RS08, S12Z) Configuration Commands
9.2.2.7.1 :DRIVEBKGDLOW n
Processors:
S08, S12, CFV1, S12Z
Note: Not RS08.
By default, the BKGD signal
is driven low
before and after programming operations are complete.
0
Do NOT drive BGND low before and after programming operations.
non-zero or missing Drive BGND signal low before and after programming operations.
Example:
:DRIVEBKGDLOW 0 Does NOT drive the BKGD signal LOW after operations are complete.
9.2.2.7.2 :RSTLOWPOSTSAP
Processors: All
Drives the RESET signal LOW before and after SAP operations.
9.2.2.8
Connection Related Configuration Commands (ColdFire V2, V3, V4)
9.2.2.8.1 :USEPSTSIGNALS n
Processors: ColdFire
Specifies whether to use PST signals during debug.
0
Do not use PST signals.
1
Use PST signals.
9.2.2.8.2 :RSTLOWPOSTSAP
Processors: All
Drives the RESET signal LOW before and after SAP operations.
