HXD8
From Openmoko
like FIC is going to develop another device for OpenMoko, with the (code)name HXD8. On May 26th 2007 (GMT) Sean confirmed the existence of the device, said hardware support was almost done and cleverly told us to wait anxiously.
According to this post the device is a networked collaborative automotive GPS unit, from http://dash.net/ .
It has been confirmed that the DE is an HXD8
Speculations: This article or section documents a device that is not yet confirmed formally and the device (if even released) may differ from the specifications given here. This page is based on well educated guesses, not facts. |
It looks
Contents |
Hardware
From the information found in the hardware documentation and kernel patches parts of the subversion repositories, the following specifications can be predicted.
Processor
According to https://svn.openmoko.org/trunk/src/target/kernel/patches/s3c2440-nand-disable-hwecc.patch the HXD8 will feature an S3C2440, capable of running up to 400MHz. The features are the same as the S3C2410 plus a camera interface.
- GPIO Assignments: https://svn.openmoko.org/trunk/doc/hardware/HXD8v011/gpio.txt
Flash
According to a currently available hardware patch, the device supports 1 NAND Flash device of up to 4G. (uncertain about what kind of G that is. Could be 4Gb (which makes about 0,5GB), could be 4GB).
The DE has 3G of Flash.
Some other patch implies that there is the possibility of connecting 3 NAND Flash chips.
RAM
128MB Random Access Memory, of which 2MB is used as a Framebuffer. https://svn.openmoko.org/trunk/src/target/u-boot/patches/uboot-hxd8.patch
GSM/GPRS
Using same GSM modem on GTA01 and GTA02, TI Calypso with 850/1800/1900 configuration.
SD-Card
The HXD8 features either an SD, miniSD or microSD-card slot.
- Connected to: S3C2410 MMC/SD controller
- Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/s3c_mci.patch
LCD Module (LCM)
The HXD8 features a 480x272 pixel LCD (which is a widescreen (16:9) ratio) with PWM-controlled backlight.
Light Sensor
The HXD8 features a light sensor by TAOS Inc. (Texas Advanced Optoelectronic Solutions). It's either a TLS2560 or a TLS2561. This light sensor will be included to measure ambient illuminance to control the LCM backlight illumination, or for exposure control for the camera (depends on location of the chip).
- Datasheet: tsl2560-e53.pdf
Power Management
A Philips PCF50606 is used for power management.
- Data Sheet: PCF50606/605
- User Manual: pcf50606.pdf
- Connected to: S3C2440 via I2C.
WiFi
HXD8 features an SPI-connected Marvell 8686 based WiFi module.
GPS
The PMU chip's config contains a voltage group called GPS_3V3, and the gpio.txt a set of GPS UART data pins. HXD8 using SirfSTAR III based module solution