Technical reference
SIMpad TechRef.pdf (may not legal I'll write Siemens the rights owner)
Picture shows SIMpad SLC internals
Parts
1 Serial Connector
This connector is called Lumberg-connector cause the Lumberg company produces the connector for Siemens. It is the same one as it was used on old Siemens mobile phones like Siemens S25 C35 C45 SL45 MT50 S45. I think the cheapest and easiest way to get a plug is to buy a data cable or a headset for one of those mobiles. But keep in mind to buy one which is fully equipped. The wiring may be different to the SIMpad or contain voltage level switcher so you need to rip the cable off.
Schematic
Jack (Datasheet: 8830A01.pdf (May be illegal -I will ask for rights))
Plug (Datasheet: 8835B01.pdf (May be illegal -I will ask for rights))
Pinout
| Simpad | PC | Head set | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Pin | Name | Function | Comment | Direction | Pin | Name | Name | Function | Comment |
| 1 | GND | signal ground | <-> | 5 | GND | GND | |||
| 2 | TD | transmit data | ±12V | -> | 2 | RD | |||
| 3 | RD | receive data | ±12V | <- | 3 | TD | |||
| 4 | DTR | data terminal ready | ±12V | -> | 1,6 | CD,DSR | short to HS | ||
| 5 | RTS | request to send | ±12V | <- | 8 | CTS | |||
| 6 | CD,DSR(?) | data set ready | ±12V / ActiveSync usually connects when CD gets active | <- | 4 | DTR | |||
| 7 | CTS | clear to send | ±12V | -> | 7 | RTS | |||
| 8 | ? | ? | ? | ? | 4 | HS | head set flag | short to DTR | |
| 9 | MICG | microphone ground | <-> | MICG | |||||
| 10 | MIC | microphone audio | upp=1.5V | <- | MIC | ||||
| 11 | AUD | speaker audio | upp=1.5V | -> | AUD | ||||
| 12 | AUDG | speaker ground | <-> | AUDG | |||||
2 USB Client Port
This Port can only be used to connect to the PC and surf or exchange Data. You can't use it to connect Hardware like a Keyboard to it.
3 Graphic Controller MQ200
Datasheet MQ-200.pdf (may not legal I will write MediaQ the rights owner)
4 CPU SA1110
Intel Strongarm GDS1110BC (running at 206MHz). Datasheet SA-1110 Manual.pdf (may not be legal)
5 RAM (Samsung K4S561632A)
See RAM-Flash upgrade for compatible modules. And a 128MB Upgrade.
6 Flash (Intel E28F128 J3A150)
See RAM-Flash upgrade for compatible modules. You can upgrade a CL4 to 32 MB Flash.
7 DECT Modul MD34
This is the pin assignment of the DECT module for the SIMpad device.
The connector is a 20pin FPC connector. It uses 8 GPIO pins, 5V, GND, nReset.
| Pin | Name | Function | Comment | In/Out |
|---|---|---|---|---|
| 1 | GND | - | Connection between pin 1 and 2 | Pwr |
| 2 | GND | - | Connection between pin 1 and 2 | Pwr |
| 3 | nn | nc | - | - |
| 4 | nn | nc | - | - |
| 5 | DECT_POWER_ON | On / Off (write-only) | The module can be switched on/off if the bit in the CS3 latch with the value 0x100 is set/clear | In |
| 6 | TXD | Transmit Data | GPIO 14 | Out |
| 7 | CTS | Clear To Send | GPIO 08 | In |
| 8 | DCD | Data Carrier Detect | GPIO 23 | In |
| 9 | RXD | Receive Data | GPIO 15 | In |
| 10 | RTS | Request To Send | GPIO 09 | Out |
| 11 | DTR | Data Terminal Ready | GPIO 07 | Out |
| 12 | nn | nc | - | - |
| 13 | nn | nc | - | - |
| 14 | RI | Ring Indicator | GPIO 19 | In |
| 15 | nRESET_OUT | RESET_OUT is negativ | The DECT module will be reset if the processor gets a reset. | Out |
| 16 | DSR | Data Set Ready | GPIO 06 | In |
| 17 | LOCK_IND | - | CS3 read | Out |
| 18 | nn | nc | - | - |
| 19 | +5V | Power | Connection between pin 19 and 20 | Pwr |
| 20 | +5V | Power | Connection between pin 19 and 20 | Pwr |
nn = not named
nc = not connected
8 MD34 Connector
See DECT Modul MD34
9 UCB1300 Touchscreen-, Sound- and Keyboardcontroller
Datasheet UCB1300 2.pdf (may not legal I will write PHILIPS the rights owner)
10 TDA8007B Smartcardreader Controller
Datasheet TDA8007B 6.pdf (may not legal I will write PHILIPS the rights owner)
11 JTAG Connector
See JTAG HOWTO
12 Battery Switch
This switch totally cuts off power supply by the batterypack, power by the external supply will still be on. In order to totally reset, you need to take all power sources off!
Test Grid
Would be very cool to find out the pins!
I think it is possible to force a corrupted simpad to load a clean bootloader using this grid. i did it a long time ago and can no longer remember the exact circumstances or procedures, but it involved shorting two pins in this grid while resetting or powering on. the pins in question (can see the scratches where i did it) were, with the back of the pad facing you and the stylus hole top right: the top left pin and the fourth from the left pin on the bottom row.
this was found on one of the simpad discussion threads years ago and i no longer have the link.
MIC2562A PCMCIA Socket Power Controller
Datasheet MIC2562A.pdf (may not legal I will write MICREL the rights owner)
JTAG jumper
Needed to keep power on while SIMpad is open - see JTAG HOWTO for details. It is called J10 there.
Power connector
I need to figure out how power connectors are listed.
Internal microphone connector
This connector is for the internal microphone. The connector is build in every SIMpad model but the microphone is only build in SL4/SLC.
Internal speaker connector
This is the speaker connector.
Display
Toshiba LTM08C343S
Deep inside
Collect information about the internal SIMpad wiring.
To do
- Make better pictures of Jack und Plug
- Find more Datasheets