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2 spi_lm70llp :  LM70-LLP parport-to-SPI adapter
15 -----------
20 (layered under) the LM70 logical driver (a "SPI protocol driver").
27 --------------------
28 The schematic for this particular board (the LM70EVAL-LLP) is
39       D0     2      -         -
40       D1     3     -->      V+   5
41       D2     4     -->      V+   5
42       D3     5     -->      V+   5
43       D4     6     -->      V+   5
44       D5     7     -->      nCS  8
45       D6     8     -->      SCLK 3
46       D7     9     -->      SI/O 5
47      GND    25      -       GND  7
48     Select  13     <--      SI/O 1
51 Note that since the LM70 uses a "3-wire" variant of SPI, the SI/SO pin
54 pin low.  This can't be shared with true SPI devices, but other 3-wire
80 ---------
82 - David Brownell for mentoring the SPI-side driver development.
83 - Dr.Craig Hollabaugh for the (early) "manual" bitbanging driver version.
84 - Nadir Billimoria for help interpreting the circuit schematic.