diff options
Diffstat (limited to 'keyboard/hhkb/doc')
| -rw-r--r-- | keyboard/hhkb/doc/HHKB.txt | 36 | ||||
| -rw-r--r-- | keyboard/hhkb/doc/Power.txt | 48 |
2 files changed, 67 insertions, 17 deletions
diff --git a/keyboard/hhkb/doc/HHKB.txt b/keyboard/hhkb/doc/HHKB.txt index f99a074437..422c452c90 100644 --- a/keyboard/hhkb/doc/HHKB.txt +++ b/keyboard/hhkb/doc/HHKB.txt @@ -30,25 +30,27 @@ Connector Cable Two PCBs are connected by 15 lines(13 in case of Pro2). Vcc and GND use 3(2) lines each, other 9 lines are for keyboard signaling. - Keyswitch PCB connector Teensy++ pins - ------------------------------------------------------------------------------- - 1 Vcc(5V) Not exist on Pro2 5V - 2 Vcc(5V) 5V - 3 Vcc(5V) 5V - 4 TP1684 KEY: Low(0) when key pressed PE6 input(with pullup) - 5 TP1684 KEY_PREV: assert previous key state??? PE7 output - 6 HC4051 A(bit0) select 8 rows(0 to 7) PB0 output - 7 HC4051 B(bit1) PB1 output - 8 HC4051 C(bit2) PB2 output - 9 LS145 A(bit0) select 8 columns(0 to 7) PB3 output - 10 LS145 B(bit1) PB4 output - 11 LS145 C(bit2) PB5 output - 12 LS145 D(enable) Low(0) enable selected column PB6 output - 13 GND GND - 14 GND GND - 15 GND Not exist on Pro2 GND + Keyswitch connector + pro pro2 Description Teensy++ pins + -------------------------------------------------------------------------------------------- + 1 Vcc(5V) Not exist on Pro2 5V + 2 1 Vcc(5V) 5V + 3 2 Vcc(5V) 5V + 4 3 TP1684 KEY: Low(0) when key pressed PE6 input(with pullup) + 5 4 TP1684 KEY_PREV: make threshold PE7 output + 6 5 HC4051 A(bit0)\ PB0 output + 7 6 HC4051 B(bit1) > select row(0 to 7) PB1 output + 8 7 HC4051 C(bit2)/ PB2 output + 9 8 LS145 A(bit0)\ PB3 output + 10 9 LS145 B(bit1) > select column(0 to 7) PB4 output + 11 10 LS145 C(bit2)/ PB5 output + 12 11 LS145 D(enable) Low(0) enables selected column PB6 output + 13 12 GND GND + 14 13 GND GND + 15 GND Not exist on Pro2 GND NOTE: guessing pin5(KEY_PREV) may work for hysteresis of capacitive sensing. + NOTE: 1KOhm didn't work as pullup resistor on KEY. AVR internal pullup or 10KOhm resistor was OK. (HHKB_connector.jpg) diff --git a/keyboard/hhkb/doc/Power.txt b/keyboard/hhkb/doc/Power.txt new file mode 100644 index 0000000000..1287053c3c --- /dev/null +++ b/keyboard/hhkb/doc/Power.txt @@ -0,0 +1,48 @@ +HHKB Power consumption +---------------------- + +**Power consumption + board clock/prescaler keyswitch power ctrl current + -------------------------------------------------------------------------- + tmk 16MHz no no 26.4mA + tmk 16MHz pro1 no 45.1mA + tmk 16MHz/2 no no 18.1mA + tmk 16MHz/2 pro1 no 37.3mA + tmk 8MHz no no 18.9mA + tmk 8MHz pro2 no(w/o FET) 32.1mA + tmk 8MHz pro2 no(w FET) 32.1mA withou POWER_ON/FF + tmk 8MHz pro2 no(w FET) 32.6mA with POWR_ON/OFF + tmk 8MHz pro2 15ms(w FET) 21.3mA with POWR_ON/OFF, enumerated but error -32 + tmk 8MHz pro2 60ms(w FET) 13.3mA with POWR_ON/OFF, not enumerated + + gh60 16MHz 25.8mA + gh60 16MHz USB suspend w LED breathing 17.6-29.1mA + gh60 16MHz USB suspend w/o LED 0.2mA(0.231-0.276mA) + Poker 5.6mA + Poker USB suspend 0.3mA(0.301mA) + gh60 16MHz stock firmware by komar 26.8mA + + + HHKB pro2 Over All 139.4mA + HHKB pro2 Controller 115.1mA + HHKB pro1 Controller 25.9mA + + +keyswitch power consumption: +pro1: 45.1-26.4=18.7mA + 37.3-18.1=19.2mA +pro2: 32.1-18.9=13.2mA + + + + + +**Low Freq Crystal or Prescaler? +No advantage of Low Freq Crystal against Prescaled. + +Clock routing +X'tal --+---->Prescaler-------> System Clock + | + +---------------------> USB PLL + +Design Decision: Install 16MHz crystal on board with using clock rescaler. |