5.5.6.4 JTAG Scan-chain Detection

Performs an auto detection of JTAG devices. If no devices are found, JTAG enable sequences for various families are applied and the detection retried. If any device on the scan chain does not have JTAG enabled, the "use reset" parameter can help to enable JTAG. (This will not necessarily work with devices not manufactured by Microchip.)

Table 5-17. JTAG Scan-chain Detection Command Format
FieldSizeDescription
CMD_HOUSEKEEPING_JTAG_DETECT1 byteCommand ID
Version (0x00)1 byteCommand version
Use reset1 byte

0 = External reset will NOT be applied

1 = External reset will be applied

Responses: