TDO/DI sampled just prior to rising edge
0x2A,
Length
This will clock in bits on TDO/DI from 1 to 8 depending on the Length byte. A length of 0x00 will do 1 bit and a length of 0x07 will do 8 bits. The data will be shifted down so that the first bit in may not be in bit 0, but from 1 upwards depending on the number of bits to shift (i.e. a length of 1 bit will have the data bit sampled in bit 7 of the byte sent back to the PC). The data will be sampled on the rising edge of the TCK/SK pin.
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Clock Data Bits In on +ve Clock Edge LSB (no Write)
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