Sony NEWS
Preassembled converter is available here: https://geekhack.org/index.php?topic=72052.0
NWP-5461
-------------
\ 1 2 3 x 5 /
\ 6 7 8 9 /
---------
1 VCC
2 BZ(Speaker)
3 Keyboard Data(from keyboard MCU TxD)
4 NC
5 GND
6 Keyboard Command?(to MCU RxD via two schmitt triggers of Z8 74LS14)
7 Mouse Data(from Mouse Ext connector)
8 Power switch(directly to the switch via diode)
9 FG
NWP-411A
-------------
\ 1 2 3 x 5 /
\ x 7 x 9 /
---------
1 VCC
2 BZ(Speaker)
3 Keyboard Data(from keyboard MCU TxD)
4 NC
5 GND
6 NC
7 Mouse Data(from Mouse Ext connector)
8 NC
9 FG
Its scan code is one byte which consists of 1-bit release(break) flag at MSB and 7-bit code. For example 0x29 is sent when 'a' key is pressed and 0xA9 when released.
MSB LSB
7 6 5 4 3 2 1 0 bit
| | | | | | | |
| +-+-+-+-+-+-+-- scan code(00-7F)
+---------------- break flag: sets when released
SONY NEWS NWP-5461 ,---. ,------------------------, ,------------------------. ,---------. |Pow| | F1 | F2 | F3 | F4 | F5 | | F6 | F7 | F8 | F9 | F10| | F11| F12| ,-----------. `---' `------------------------' `------------------------' `---------' | *| /| +| ,-------------------------------------------------------------. ,---. ,---------------| |Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =| \| BS | |Hlp| | 7| 8| 9| -| |-------------------------------------------------------------| |---| |---------------| |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]|Del| | |Ins| | 4| 5| 6| ,| |---------------------------------------------------------' | |---| |---------------| |Ctrl | A| S| D| F| G| H| J| K| L| ;| '| `|Return| |Clr| | 1| 2| 3| | |-------------------------------------------------------------| |---| |-----------|Ent| |Shift | Z| X| C| V| B| N| M| ,| ,| /| |Shift | |PgU| | 0| .| Up| | |-------------------------------------------------------------| |---| |---------------| |Alt |Gui |Alt | Space | |Gui|App|Ctrl | |PgD| |Tab|Lef|Dow|Rig| `-------------------------------------------------------------' `---' `---------------' ,---. ,------------------------, ,------------------------. ,---------. | 7A| | 01 | 02 | 03 | 04 | 05 | | 06 | 07 | 08 | 09 | 0A | | 68 | 69 | ,-----------. `---' `------------------------' `------------------------' `---------' | 64| 65| 52| ,-------------------------------------------------------------. ,---. ,---------------| | 0B| 0C| 0D| 0E| 0F| 10| 11| 12| 13| 14| 15| 16| 17| 18| 19 | | 6A| | 4B| 4C| 4D| 4E| |-------------------------------------------------------------| |---| |---------------| | 1A | 1B| 1C| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| | | 6B| | 4F| 50| 51| 56| |---------------------------------------------------------' | |---| |---------------| | 28 | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34| 35 | | 6C| | 53| 54| 55| | |-------------------------------------------------------------| |---| |-----------| 5A| | 36 | 37| 38| 39| 3A| 3B| 3C| 3D| 3E| 3F| 40| 41| 42 | | 6D| | 57| 59| 58| | |-------------------------------------------------------------| |---| |---------------| | 43 | 44 | 45 | 46 | 47 | 48| 49| 4A | | 6E| | 66| 5B| 5C| 5D| `-------------------------------------------------------------' `---' `---------------'
NEWS protocol is a usual asynchronous serial communication. You can receive data from the keyboard easily with UART of micro controller.
-
TTL level
-
9600bps(keyboard) / 1200bps(mouse)
-
1-start bit
-
8-data bit
-
non-parity
-
1-stop bit.
Data is received as serial input at 9600 bps from the keyboard and 1200 bps from the mouse.
3-7-2. keyboard Buzzer
The NEWS series keyboard features a built-in buzzer which can be buzzed by a signal from the system unit. In the NWS-1500, the external oscillator circuit is activated when the keyboard buzzer port is accessed, producing the sound of a buzzer. The buzzer frequency is different depending on whether the port is read or write accessed. With READ, the tone produced is approximately 2.2kHz, with WRITE, approximately l.4kHz. A flowchart of this process is given below.
Mini-DIN 8P, Serial output 1200 bps
Buttons 3
Dimensions 62 x 29 x 100 mm 0N x H x D, not including cord)
Weight Approx. 200g
Resolution 8 count/mm (200 CPI)
Interface TIL level Serial Interface 1200 bps