ATDH1165PC- Atmel, ATDH1165PC- Datasheet - Page 49

• Manufacturer Part Number: ATDH1165PC-
• Manufacturer: Atmel

Specifications of ATDH1165PC-

• Lead Free Status / Rohs Status: Not Compliant

Troubleshooting
7.2
7-8
Notices
Write to SVF instead of LPT port?
The notice appears when you select the Process.. Options command. The ISP software
will ask you if you want to save the programming data to a Serial Vector Format (SVF)
file. If you select Yes, an SVF file is created. Otherwise, the software downloads pro-
gramming data directly to the Atmel ISP devices on your circuit board. This file is
needed if you want to execute ISP on automated test equipment (ATE) that supports the
SVF format.
The SVF file created will only support ISP operations on Atmel ISP devices. If you need
to program devices from different vendors with a single SVF file or execute JTAG
Boundary Scan Test (BST) operations on an Atmel device, you need to use third-party
JTAG software that supports these features. For more information, contact Atmel PLD
Applications.
Use State Resets in SVF File?
This notice asks whether you want to include a TEST-LOGIC-RESET state in the SVF
programming file. If you are programming just Atmel ISP devices in your JTAG hard-
ware chain, it is recommended that you select Yes. If you are programming Atmel ISP
devices in a mixed-vendor JTAG hardware chain, it is recommended you select No.
Selecting Yes for the latter option causes the Atmel-ISP software to insert TEST-
LOGIC-RESET instructions within the SVF file. This may cause other vendor devices to
reset when the Atmel SVF file is being executed. In turn, boundary scan, programming
and/or functional operations of other non-Atmel device(s) in your JTAG hardware chain
may be affected. This command, however, will have no effect on Atmel devices.
Selecting No will make sure that the SVF always enters and leaves the JTAG Test
Access Port (TAP) in the RUN-TEST-IDLE state. At a later time, when you want to reset
all of your devices, you can place the TAP into the TEST-LOGIC-RESET state. This
should allow all devices in your chain to reset simultaneously.
Does Target System Support SVF Spec. Rev. D?
This message is applicable if you plan the use the Serial Vector Format (SVF) file gener-
ated by the Atmel-ISP software to execute ISP operations on an automated device
(ATE) tester. The SVF specification has several revisions. An earlier revision, Rev. C, is
supported by most ATE and semiconductor vendors. However, it requires you to imple-
ment delays for programming operations by modeling them as a specific number in the
JTAG clock TCK periods. The period of the JTAG TCK can be specified in nano- or
milliseconds.
This has some pitfalls, though. If the tester’s clock period is adjusted in the hardware
without an appropriate change in the SVF file, the delay period will be modeled incor-
rectly. The result is that the device(s) may not be programmed correctly. A later version
of the SVF specification, Rev. D, allows you to model a delay as single time value. For
example, milliseconds. This value is independent of the TCK period used by the tester
hardware. If your tester supports this, then it is the preferred format to use.
In this case, select Yes. A new notice will not appear.
Atmel ATF15xx Family: ISP Devices User Guide