Handhelds.org - Open source for handheld devices

PalmZire31Hardware

Palm Zire 31 Hardware

Specifications

• General Device Specification

• This device was produced by Palm

• Product page

• CPU

• Intel XScale PXA255

• Clock at 200mhz

• Product page

• RAM

• 16MB - 1x Samsung K4S281632E

• Data Sheet

• ROM

• MX E041433 - 4MB

• Most likly unflashable

• Display

• 164x164 12bit color CSTN (palmOS only uses 160x160 so there is a 2px border)

• Touchscreen

• 4 wire touchscreen - unknown

• uses WM9712 chip's touchscreen interface - see WM9712

• Sound

• speaker - mono

• headphone port - stereo

• See WM9712

• WM9712

• AC'97 audio codec

• 1 45mw headphone driver - stereo

• 1 400mw Speaker driver - mono

• Stereo, mono or differential microphone input - unused

• Touchscreen interface, 4 or 5 wire

• 2 comparator inputs for battery monitoring

• Up to 5 GPIO pins

• up to 4 ADC inputs

• Product site

• Drivers in linux kernel

• SD/SDIO/MMC

• controller embedded in CPU

• drivers in linux kernel

• USB

• Embedded in cpu

• Drivers in linux kernel

• Power Management

• Controlled by a MAX1559 chip

• Data sheet

• The MAX1559 is mostly automatic except for 3 pins:

• ENSD: high to enable power for the SD slot

• ENLCD: high to enable power for LCD screen

• ENC2: high to enable power for secondary core (possibly the WD9712 chip)

• These 3 pins are possibly connected to gpios

• Also found a MAX309 chip nearby. Might be related.

• Battery voltage is monitored by the WD9712 chip

• Battery charging is controlled by a MAX1551 chip, which is fully automatic.

• JTAG

• The cpu has support for jtag for debuging, but there is no port on the motherboard

• However there are 4 solder pads at the very bottom of the rear side, right in the middle.

• Serial port

• The Zire 31 doesn't have serial, just a mini usb connector, but PalmOS powers up a UART for a serial port.

• I believe the Serial port is just behind the mini-usb port, a collection of 5 empty solder pads.

• 3 will be for the actual serial, and 2 for the hotsync button.

• When in palmOS the voltages of the ports are:
   (3v) (3v)               | USB    |
               (0v)        |  port  |
   (0v) (0v)               |   here |
  

LCD configuration

GPIO configuration

PXA255

Legend:

• Direction: In - input, Out - output, In/Out - bidirectional

• State: pin level, GPLR

• AFR (Alternate Function Number): 0-3, GAFR

• Interrupt (status): Rising Edge (RE), Falling Edge (FE)

• Function - description

MoinMoin Powered

Immutable page (last edited 2007-07-28 09:48:38 by ScottMansell)

Or try one of these actions: AttachFile, DeletePage, LikePages, LocalSiteMap, RenamePage, SpellCheck