FC660C controller
=================
2017/02/24
+2017/03/25
-Connector
----------
-### Hirose DF14A-20P-1.25H
-[datasheet](http://www.mouser.com/ds/2/185/DF14_catalog-939195.pdf)
-
-### Pinouts
-LV07A and LVC138A are 5V-tolerant, the keyboard will work only with 5V power.
-
- |Controller |Switch |Description |ATmega32u4
- |-----------|--------|------------------------------------------|--------------
- | 1 | 20 | +Z7-LV07A-13-~CapsLED |PB6
- | 2 | 19 | +Z7-LV07A-11-~InsertLED |PB7
- | 3 | 18 | +Z3-LVC138A-4-~G2A Z6-TP1684-5-~EN |PD7
- | 4 | 17 | +Z3-LVC138A-3-A |PD4
- | 5 | 16 | +Z3-LVC138A-3-B |PD5
- | 6 | 15 | +Z3-LVC138A-3-C |PD6
- | 7 | 14 | +Z7-LV07A-3 LV4051A-11-A |PB0
- | 8 | 13 | +Z7-LV07A-1 LV4051A-10-B |PB1
- | 9 | 12 | +Z7-LV07A-5 LV4051A-9-C |PB2
- |10 | 11 | *Z5-LV4051A-6-~EN(Col 8-F) |PB3
- |11 | 10 | *Z4-LV4051A-6-~EN(Col 0-7) |PB4
- |12 | 9 | *Z2-AD5258-4-SDA(I2C) |PD1(TWI)
- |13 | 8 | *Z2-AD5258-5-SDL(I2C) |PD0(TWI)
- |14 | 7 | *Z6-TP1684-2-KEY(i) |PC6
- |15 | 6 | *Z6-TP1684-4-HYS(o) |PC7
- |16 | 5 | 5V |5V
- |17 | 4 | 3.3V |5V
- |18 | 3 | GND |GND
- |19 | 2 | GND |GND
- |20 | 1 | FG |GND
+Thread on Geekhack: https://geekhack.org/index.php?topic=88439.0
+
+
+Firmware
+--------
+Just `make` to build firmware. And consult with wiki for further information.
+
+https://github.com/tmk/tmk_keyboard/wiki
+
+
+Pinouts
+-------
+
+ |Switch |Controller |
+ | board | board |Description |Schematic |ATmega32u4
+ |--------|-----------|--------------------------------------|-----------|------------
+ | 1 |20 | FG |FG |GND
+ | 2 |19 | GND |GND |GND
+ | 3 |18 | GND |GND |GND
+ | 4 |17 | 3.3V |V33 |3.3V/5V
+ | 5 |16 | 5V |Vcc |5V
+ | 6 |15 |*Z6-TP1684-4-HYS(o) |FBSTB |PC7
+ | 7 |14 |*Z6-TP1684-2-KEY(i) |OUT |PC6
+ | 8 |13 |*Z2-AD5258-5-SCL(I2C) |SCL |PD0(TWI)
+ | 9 |12 |*Z2-AD5258-4-SDA(I2C) |SDA |PD1(TWI)
+ |10 |11 |*Z4-LV4051A-6-~EN(Col 0-7) |INH_1 |PB4
+ |11 |10 |*Z5-LV4051A-6-~EN(Col 8-F) |INH_2 |PB3
+ |12 | 9 |+Z7-LV07A-5 (LV4051A-9-C) |SEL_C |PB2
+ |13 | 8 |+Z7-LV07A-1 (LV4051A-10-B) |SEL_B |PB1
+ |14 | 7 |+Z7-LV07A-3 (LV4051A-11-A) |SEL_A |PB0
+ |15 | 6 |+Z3-LVC138A-3-C |COL4 |PD6
+ |16 | 5 |+Z3-LVC138A-2-B |COL3 |PD5
+ |17 | 4 |+Z3-LVC138A-1-A |COL2 |PD4
+ |18 | 3 |+Z3-LVC138A-4-~G2A Z6-TP1684-5-~EN |COL1 |PD7
+ |19 | 2 |+Z7-LV07A-11-~InsertLED |LED1 |PB7
+ |20 | 1 |+Z7-LV07A-13-~CapsLED |LED2 |PB6
```
* 5V intferface
+ 3.3V interface
```
+- Connector on Switch board: https://i.imgur.com/Zi89xO5.jpg
+- Connector on Controller board: https://i.imgur.com/9SZUzYo.jpg
+
+
Key Matrix
----------
-Row5-7 has no key, you can omit scaning those. Topre original controller scans those rows for some reason.
+Row5-7 have no key, you can omit scaning on those lines. Topre original controller scans those rows for some reason.
| |0 |1 |2 |3 |4 |5 |6 |7 |8 |9 |A |B |C |D |E |F |
|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|
| 6| | | | | | | | | | | | | | | | |
| 7| | | | | | | | | | | | | | | | |
+Logic analyzer pics:
+- https://i.imgur.com/9SZUzYo.jpg
+- https://i.imgur.com/5FCP1Ay.png
+
+This code emuluates what original cotnroller does for matrix scan.
+- https://github.com/tmk/tmk_keyboard/blob/master/keyboard/fc660c/fc660c.c
+
+
+### Row designation
+LV138A(Z3) selects a row line and gives strobe by enabling with ~G2A(18).
+
+ |Row |A/17|B/16|C/15|
+ |----|----|----|----|
+ |0 |0 |0 |0 |
+ |1 |1 |0 |0 |
+ |2 |0 |1 |0 |
+ |3 |1 |1 |0 |
+ |4 |0 |0 |1 |
+ |5 |1 |0 |1 |
+ |6 |0 |1 |1 |
+ |7 |1 |1 |1 |
+
+
+### Column designation
+LV4051A(Z4, Z5) select one of 16 column lines to sense capacitance of switches.
+
+ |Col |A/14|B/13|C/12|Z4-EN/10|Z5-EN/11|
+ |----|----|----|----|--------|--------|
+ |0 |0 |0 |0 |0 |1 |
+ |1 |1 |0 |0 |0 |1 |
+ |2 |0 |1 |0 |0 |1 |
+ |3 |1 |1 |0 |0 |1 |
+ |4 |0 |0 |1 |0 |1 |
+ |5 |1 |0 |1 |0 |1 |
+ |6 |0 |1 |1 |0 |1 |
+ |7 |1 |1 |1 |0 |1 |
+ |8 |0 |0 |0 |1 |0 |
+ |9 |1 |0 |0 |1 |0 |
+ |A |0 |1 |0 |1 |0 |
+ |B |1 |1 |0 |1 |0 |
+ |C |0 |0 |1 |1 |0 |
+ |D |1 |0 |1 |1 |0 |
+ |E |0 |1 |1 |1 |0 |
+ |F |1 |1 |1 |1 |0 |
+
+
+FCC documents
+-------------
+https://fccid.io/RPKFC660C
+
+- schematic: https://fccid.io/pdf.php?id=1888185
+- part list: https://fccid.io/pdf.php?id=1888184
+
+
+Datasheets
+----------
+- Hirose DF14A-20P-1.25H: http://www.mouser.com/ds/2/185/DF14_catalog-939195.pdf
+- LV07A: http://www.ti.com/lit/ds/symlink/sn74lv07a.pdf
+- LV138A: http://www.ti.com/lit/ds/symlink/sn74lvc138a.pdf
+- LV4051A: http://www.ti.com/lit/ds/symlink/sn74lv4051a.pdf
+- AD5258: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf
+
+
+3.3V power supply
+-----------------
+LV07A and LVC138A are 5V-tolerant and can be powered with 5V, the keyboard will work only with 5V power supply.
+It may not be completely safe to operate LV138A with 5V Vcc, its datasheet says:
-Scan
-----
-Row: Drive(LVC138A)
-Col: Sense(4051)
+> Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Resources
---------
-- Pics https://imgur.com/a/4UKkZ
+- Pics: https://imgur.com/a/UTR8Z
projects / max / tmk_keyboard.git / commitdiff