Visible to Intel only — GUID: reference_TCL_tcl_pkg_jtag_ver_1_0_cmd_device_dr_shift
Ixiasoft
Visible to Intel only — GUID: reference_TCL_tcl_pkg_jtag_ver_1_0_cmd_device_dr_shift
Ixiasoft
3.1.18.2. device_dr_shift (::quartus::jtag)
The following table displays information for the device_dr_shift Tcl command:
Tcl Package and Version | Belongs to ::quartus::jtag |
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Syntax | device_dr_shift [-h | -help] [-long_help] [-dr_value <data register value> ] -length <data register length> [-no_captured_dr_value] [-value_in_hex] | ||
Arguments | -h | -help | Short help | |
-long_help | Long help with examples and possible return values | ||
-dr_value <data register value> | Value of string operand type in either default binary or hexadecimal format to be written into the data register in the JTAG tap controller of the open device | ||
-length <data register length> | Length of the data register in the JTAG tap controller in the open device | ||
-no_captured_dr_value | Option not to return the data instruction register value. If this is specified, this DR scan may be packed together with the subsequent IR or DR scan until the device is unlocked or a captured value is requested | ||
-value_in_hex | Option to specify that the value string is represented in hexadecimal format | ||
Description | Writes the specified value into the data register of the JTAG tap controller of the open device. Returns the captured data register value. The captured value return can be disabled to improve the JTAG communication speed by packing multiple IR or DR scans together. The value is specified using either a binary string or a hexadecimal string. The bit on the left most side is the first bit shifted in. For example, using binary string "010001", the first bit shifted into the dr register is 1; the last bit is 0. The same string can be represented in hexadecimal as "11". The device must be locked before you can perform this operation. |
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Example Usage |
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