Difference between revisions of "JTAG explorer toy"
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[[Image:Batman.jpg|thumb|'''Fig.1: batman.''' Holy mackerel Batman! JTAG really is THE SHIT!!1]] | [[Image:Batman.jpg|thumb|'''Fig.1: batman.''' Holy mackerel Batman! JTAG really is THE SHIT!!1]] | ||
− | [[Image:michai_015_schem.jpg|thumb|'''Fig.2: schematics.''' The only slightly interesting bits are the 4 TAP-lines going between the MCU's, and the fact they share mutually-exclusive use of the serial Tx-line (the Rx-line is always shared).]] | + | [[Image:michai_015_schem.jpg|thumb|'''Fig.2: toy-board schematics.''' The only slightly interesting bits are the 4 TAP-lines going between the MCU's, and the fact they share mutually-exclusive use of the serial Tx-line (the Rx-line is always shared).]] |
[[Image:michai_015_bscan.jpg|thumb|'''Fig.3: JTAG boundary-scan chain.''' A host talks to the TAP (''Test Access Port'') controller using 4 lines, shifting data in and out.]] | [[Image:michai_015_bscan.jpg|thumb|'''Fig.3: JTAG boundary-scan chain.''' A host talks to the TAP (''Test Access Port'') controller using 4 lines, shifting data in and out.]] |