Sandisk Sansa C100

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Current Status

As of revision 3ba2f6e5c7, the code for this port has been removed from the main Git branch. Consider this a dead port. This page will remain only for historic purposes.

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Modes

USB Boot Mode/Recovery Mode

Hold select/center button on USB connect.

Production Test Mode

Holding the lower-volume (the leftward one) button, the "options"/bottom of circle button, and pressing menu for several seconds will enable a production test mode which can be used to test the various parts of the player. It seems to me that all of the basic information we need is available in this application (button triggers, LCD info, etc). The strings used by this mode can be found in the player.rom hex file.

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Firmware

Files

http://www.sendspace.com/file/7ge9cr - Sansa c140/c150 Updater. American firmware updater to v1.0.0.5a. Does not work if the player already has a v2 firmware on it.
http://rapidshare.com/files/13115830/c100_20008A.rar - American firmware v2.0.008A.

Upgrades

To upgrade the firmware, the file player.rom needs to be copied to the root of the device. Upon reboot, the user is prompted to upgrade. If yes is selected, the firmware is upgraded and the file deleted from the FAT partition. A reboot is required to actually start the new firmware - the existing version will continue to run. Based on the observation that the existing firmware continues to run after a firmware update, it would seem that the firmware itself is executing from RAM, rather than executing in place from a ROM.

tcctool

You can safely upload to and execute code from RAM using tcctool (pre-built Windows binary here: https://download.rockbox.org/utils/tcctool/).

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GPIOA Pins

000x1 - USB Plug
000x2 - Hold Switch
00x80 - Select
0x100 - Power/Menu
0x018 - Volume Up
0x028 - Volume Down
0x048 - Down Button
0x014 - Play/Pause/Up
0x024 - Right
0x044 - Left

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Hardware

Chips

• Telechips TCC770 = ARM946E-S @ 120MHz(?) (http://www.telechips.com/product/p_024.asp)
• ESMT M12S64164A = 4Mx16 SDRAM (according to p.6 of http://www.esmt.com.tw/img/KGD%20of%20ESMT%20-%201Q06.pdf)
• Texas Instruments TLV320AIC23B = Stereo Audio CODEC (http://focus.ti.com/docs/prod/folders/print/tlv320aic23b.html)
• Philips TEA5767 = FM radio (http://forum.mp3store.pl/index.php?showtopic=14695&st=0&p=142343&#entry142343) (https://www.rockbox.org/wiki/pub/Main/DataSheets/application_note_tea5767-8.pdf)
• Texas Instruments LW052A - Dual 4-channel analog multiplexer/ demultiplexer - https://www.rockbox.org/wiki/pub/Main/DataSheets/TexasInstrumentsLW052ADataSheet.pdf

v1 (NAND Interface)

Larger images: | Front with LCD flipped away | Front | Back | Memory Chip |

• v1.00: Samsung K9K8G08U0M = 1 or 2 GB memory (http://www.alldatasheet.com/datasheet-pdf/pdf/104336/SAMSUNG/K9K8G08U0M.html)

v2 (SD/Triflash Interface)

Larger images: | Front | Memory Board 1 | Memory Board 2 |

• "Ver 1.01" printed on the top of the board.
• The extra chip on the bottom right appears to be a 64K I2C™ Serial EEPROM. Search this document for 4A64: http://ww1.microchip.com/downloads/en/DeviceDoc/21189h.pdf.
• 2x SDTNKGHSM-8192 1GB Flash Chips
• 20-99-00090-3 SDC1 Controller (Similar to the v3 m200 and Sansa e200/c200)
• Some flash extracted info here: http://forum.soft-center.ru/viewtopic.php?t=769.

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Useful Links

Similar devices: LogikDaxPort, SansaM200Port, IaudioU3Info, SamsungK5Port.

Forum Thread.

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CategoryFrontpage: Sandisk Sansa c100 Port Index [New Ports]