hhkb: Revise doc
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1 changed files with 12 additions and 10 deletions
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@ -104,14 +104,14 @@ Matrix diagram:
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|bias control? - - - - - - - - ---
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| 3.9K*8 R R R R R R R R |
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+--------^+ +--------+ - - - - - - - - |
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| 2| | HC4051 <0-------|-|-|-|-|-|-|-|--|R|-+
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| |capa. | <1-------|-|-|-|-|-|-|-|--|R|-+
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| 3| | HC4051 <0-------|-|-|-|-|-|-|-|--|R|-+
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| DIL-20 |capa. | <1-------|-|-|-|-|-|-|-|--|R|-+
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| TP1684 |sense | <2-------|-|-|-|-|-|-|-|--|R|-+
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| 11<------| <3-------|-|-|-|-|-|-|-|--|R|-+
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| 20<------| <3-------|-|-|-|-|-|-|-|--|R|-+
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| | | <4-------|-|-|-|-|-|-|-|--|R|-+
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| | | <5-------|-|-|-|-|-|-|-|--|R|-+
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| <-+ | <6-------|-|-|-|-|-|-|-|--|R|-+
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| 1 4 | | | <7-------|-|-|-|-|-|-|-|--|R|-+
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>5~EN <-+ | <6-------|-|-|-|-|-|-|-|--|R|-+
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| 2 4 | | | <7-------|-|-|-|-|-|-|-|--|R|-+
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+---V---^-+ | +-^-^-^--+ 0 1 2 3 4 5 6 7 33K*8
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KEY HYS | A B C +-----------------+
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| | +-^----+ | | | | LS145 |
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@ -130,14 +130,14 @@ Matrix diagram:
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|bias control? - - - - - ---
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| 3.9K*5 R R R R R |
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+--------^+ +--------+ - - - - - |
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| | | HC4051 <0-----------|-|-|-|-|----|R|-+
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| 3| | HC4051 <0-----------|-|-|-|-|----|R|-+
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| |capa. | Z2 <1-----------|-|-|-|-|----|R|-+
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| TP1684 |sense | <2-----------|-|-|-|-|----|R|-+
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| <---+--| <3-----------|-|-|-|-|----|R|-+
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| 20<---+--| <3-----------|-|-|-|-|----|R|-+
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| | | | <4-----------|-|-|-|-|----|R|-+
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| | ~En| <5-----------|-|-|-|-|----|R|-+
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| | +----> <6-----------|-|-|-|-|----|R|-+
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| | | | | A B C <7-----------|-|-|-|-|----|R|-+
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>5~EN | +----> <6-----------|-|-|-|-|----|R|-+
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| 2 4 | | | | A B C <7-----------|-|-|-|-|----|R|-+
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+---V---^-+ | | +-^-^-^--+ | | | | | |
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KEY HYS | | | | | | | | | | |
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| | | | +--------+ | | | | | |
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@ -159,6 +159,8 @@ Matrix diagram:
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+--------------------------------------------------+ |
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| connector | ---
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+--------------------------------------------------+ GND
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TP1684-5(~EN) pin is connected with LS145-D/Connector-11.
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Signals charts
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@ -170,7 +172,7 @@ Signals charts
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(HHKB_chart1.jpg)
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Space bar locate at ROW:3 COL:7. A key is selected by HC4051(C,B,A) and LS145(C,B,A).
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Key state can be read on TP1684(4/KEY) while asserting low on LS145(D).
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Key state can be read on TP1684(4) while asserting low on LS145(D).
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(HHKB_chart2.jpg)
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