• Table of contents
• Sony Ericsson K200i/K220i
  • Specifications
  • Hardware
    • Schematics
    • GSM Chipset
    • NOR Flash + SRAM
    • Audio ringtone
    • Serial cable
  • Stock firmware notes
    • MMI codes
    • Enabling the RVTMUX logging

Sony Ericsson K200i/K220i¶

This is another ODM phone model based on TI Calypso. Both K200i and K220i are identical, except that the K220i has an FM receiver. Interestingly enough, this one has more similarities with Pirelli DP-L10 than with SonyEricssonJ100i, so it's hard to tell who actually designed it for Sony Ericsson. It could have been Foxconn, the same people who designed Pirelli's foray into phones, which would explain the similarity.

NOTE: This phone is not supported by OsmocomBB yet. All information is provided for interested developers only.

UPDATE: steve-m submitted a patch adding initial support: https://gerrit.osmocom.org/c/osmocom-bb/+/30051

Specifications¶

• GSM 900/1800
• 46 x 103 x 17 mm, 82g
• STN 65k, 128 x 128
• IrDA (infrared) port
• Camera 0.3MP, 640x480
• 900mAh Li-Ion battery (BST-37)
• Ti Calypso/Iota/Rita chipset

Hardware¶

Large versions: SE-K200i-PCB1.jpg, SE-K200i-PCB2.jpg, SE-K200i-fastport.jpg.

Schematics¶

We don't have any schematics yet.

GSM Chipset¶

• DBB: Ti Calypso Baseband, 751992A model (C035, final DSP ROM version 3606), includes 512kBytes of internal SRAM
• ABB: Ti TWL3025BZ (Iota)
• RF: Ti TRF 6151CJ (Rita)
• RF PA: SKY77318-12

NOR Flash + SRAM¶

• SPANSION S71PL129NB0HFW4B (4 MiB XRAM).
  • 128Mbit NOR (16 MByte)
  • 32Mbit SRAM (4 MByte)

Audio ringtone¶

• Winbond W56932DYX chip (same W569x family as used in Pirelli DP-L10)

Serial cable¶

K200i has standard Sony Ericsson Fastport connector. Refer to SonyEricssonJ100i for more details.

Stock firmware notes¶

Below are some notes related to the stock SE's firmware.

MMI codes¶

The following MMI codes were found in the firmware dump near the address 0x00223b40:

• *#06# - no comments, we all know about this one,
• #*87223564# - this is 'TRACELOG' in T9 (see below),
• #*3722263# - not sure about '372', but '2263' is likely 'BAND',
• #*6366794636# - this is 'MEMORYINFO' in T9,
• #*2438378# - not sure about '243', but '8378' is likely 'TEST',
• #*3378378# - likely 'FERTEST'.

Enabling the RVTMUX logging¶

The RVTMUX interface is disabled by default and can be re-enabled using the MMI code #*87223564#, which opens a hidden menu. Select the Trace Log and reboot the phone. You should see the RVTMUX logging now. See also https://www.freecalypso.org/hg/freecalypso-tools/file/tip/doc/Host-tools-overview and https://www.freecalypso.org/hg/freecalypso-tools/file/tip/doc/Rvinterf-tools.