ZM7300G Series Digital Power Manager
Data Sheet
Only the DPM part numbers listed in the table can be programmed via the JTAG interface.
Note: The DPMs can be programmed via the JTAG only once. After initial programming via the JTAG, the
DPMs may be reprogrammed via I2C as necessary
10.7.2.1 SVF File
In order to program a DPM via the JTAG interface, the Serial Vector Format (SVF) file needs to be
generated. Click Generate SVF button in the System Configuration window shown in Figure 9. It will
open the SVF Generator window shown in Figure 21.
The window allows specifying the location of the target DPM in the JTAG chain and setting delays to
generate the appropriate Serial Vector Format file. The resulting file is used to program the DPMs
through the JTAG interface.
Refer to “Programming ZM7300 DPMs via JTAG Interface” Application Note for more details.
Figure 21. SVF File Generator Window
10.7.2.2 JTAG Instructions
ZM7300 series DPMs support only BYPASS and IDCODE instructions defined by IEEE 1149.1.
SAMPLE/PRELOAD and EXTEST instructions are not currently supported. Summary of the supported
instructions is shown in Table 7.
Table 7. JTAG Instructions
Instruction
BYPASS
IDCODE
OPCODE
1111
Register
Bypass
Function
Places the 1-bit bypass register between the TDI and TDO pins,
which allows the BST data to pass synchronously through the DPM to
other devices in the JTAG chain
0001
JTAG ID
Selects the ID register and places it between the TDI and TDO
Note: The Instruction Register is 4-bit wide
ZD-00896 Rev. 5.1, 13-Jul-10
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