AC100 Hardware Specification

• Wifi controller, connected to tegra via USB
• Microphone
• Internal speakers
• Webcam
• HDMI connector
• Inside the AC100

• Audio codec ALC5632 (datasheet), connected to tegra via I2C and I2S. I2C pins used are GEN1_I2C_SCL_3V3 and GEN1_I2C_SDA_3V3
• Audio amplifier TPA6017 (datasheet), can be muted by KB926D (controls shutdown pin)

• Controller ENE KBC KB926D (datasheet)
• Connected to tegra via I2C, tegra is I2C slave, tegra can trigger communication with pin EC_REQUEST#. I2C pins used are CAM_I2C_SCL and CAM_I2C_SDA

Motherboard schematics can be ordered from here: http://notebookschematic.com/?tag=compal-paz00-schematic or downloaded for free from here: http://www.go-gddq.com/upload/2011-07/11072617361523.pdf (you can find it in other places too by using compal paz00 search terms)

MSI 3070 (wifi)

lsusb identifies the wireless network adaptor as 0db0:3822 (or 0db0:3871) - Micro Star International. There are currently three-and-a-half options for drivers for this device:

• The one bundled in the Toshiba kernel sources, under /drivers/net/wireless/DPA_RT3070_WiFiBTCombo/ . This compiles to three separate modules, which have to be inserted in the right order, and will mark the kernel as “tainted”.

• The GPL'd ralink sources, available at http://www.ralinktech.com/support.php?s=2 . Currently at version 2.4.0.1 . You'll have to edit the Makefile to add paths to your ARM cross-compiler and kernel sources, and os/linux/config.mk to set the necessary -I flags and enable support for WPA supplicant. Results in a single GPL-licensed kernel module.

• The in-kernel sources. If you look under drivers/staging/rt2870/, you'll find a slightly cleaned-up version of ralink's driver. It requires you to enable “STAGING” drivers when configuring the kernel.

• Finally, the rt2x00 drivers are in the mainline kernel, under drivers/net/wireless/rt2x00, but these report only testing/development support for the 3070. In fact it works decently and is the best option. It additionally allows to use hostapd (AP mode) and and has monitor/injection support. The main limitation is that it can't have a “managed” and an “ap” interfaces active simultaneously.

There are several supplemental ICs connected to the Tegra 250 main processor via various buses. The following lists some of them:

TPS658621A-1

• download feature sheet http://www.ti.com/cn/litv/pdf/slvsaj7
• the datasheet can be found here http://www.datasheetdir.com/TPS658621A+download
• functions: battery charger power supply back light control led control on/off switcher connection to Tegra via gpio bus connection to monitor ICs via i2c?

ADT7461 (not found, but mentioned in the source, maybe inside Tegra)

• temperature monitor

ENE KB926QF-D3

• keyboard controller, embedded controller
• datasheet: ENE KB926D Toshiba

THGBM2G7D4FBAI9

• 16 GB NAND
• datasheet: http://www.toshiba.com/taec/news/press_releases/2009/memy_09_585.jsp

The 3G model contains an Ericsson F3307 Mobile Broadband Module. With the provided kernel sources, this presents itself as /dev/ttyACM{0,1,2} as well as a cdc network device “usb0” (wwan0 in recent kernels). Excerpt from dmesg:

usb 2-1.1: New USB device found, idVendor=0bdb, idProduct=190a
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-1.1: Product: F3307
usb 2-1.1: Manufacturer: <DB>^KF3307
usb 2-1.1: SerialNumber: 352641XXXXXXXXXX
usb 2-1.1: configuration #1 chosen from 2 choices
cdc_acm 2-1.1:1.1: ttyACM0: USB ACM device
cdc_acm 2-1.1:1.3: ttyACM1: USB ACM device
cdc_wdm 2-1.1:1.5: cdc-wdm0: USB WDM device
usb0 (cdc_ether): not using net_device_ops yet
usb0: register 'cdc_ether' at usb-tegra-ehci.2-1.1, CDC Ethernet Device, 02:XX:XX:XX:XX:XX
cdc_wdm 2-1.1:1.8: cdc-wdm1: USB WDM device
cdc_acm 2-1.1:1.9: ttyACM2: USB ACM device

The webcam is a 1.3M LITEON 09P2SF118 or Chicony CNF9161_A2 part with integrated digital mic.