Cowon iAudio 7 Info

Hardware Details

See it ripped apart here: http://www.imp3.net/articles/3/2007_09/14965_2.html

Download a recent firmware here: http://www.cowonglobal.com/download/Firmware/iaudio7/1_17/I7_FW_1.17.zip

Telechips TCC771L? based, ARM946E?-S core, with built-in 24-bit audio codec

Sanyo LV24020 tuner

PCF50606 chip (also found in iriver h300)

ATA2501 is used to drive sensor buttons http://www.thrman.com/technology/PDF/ATA2501_Application_Guide.pdf

LW052A? Dual 4-channel analog multiplexer/ demultiplexer (also found in iriver h300) http://www.rockbox.org/twiki/pub/Main/DataSheets/TexasInstrumentsLW052ADataSheet.pdf

160x128 TFT LCD at a claimed 18bit depth. Appears to be the Renesas HD66789R?, as used in iriver h300 and other Rockbox-supported devices.

NAND flash - Samsung K9HBG08U1M? (4GB model), K9HCG08U1M? (8GB model)

SDRAM - K4M28163PH?

Firmware format

The iAudio7 uses the standard Telechips firmware format - see TelechipsInfo

GPIO ports

GPIOA

GPIOA0	Asserted when USB is inserted
GPIOA1	Cleared when hold switch is enabled
GPIOA2	Cleared when On/Off pressed
GPIOA4	Unknown used as output
GPIOA5	Seems to be connected to LV24020 data clock
GPIOA6	Seems to be connected to LV24020 data I/O
GPIOA7	Seems to be connected to LV24020 data NR_W
GPIOA10	Used by LCD control interface
GPIOA15	May be LCD reset?

GPIOB

GPIOB10	i2c data (SDA)
GPIOB11	i2c clock (SCL

GPIOD

GPIOD0	Switch between codec and FM-radio. Connected to A pin of LW052A?
GPIOD1	LCD backlight on
GPIOD4	ATA2501 SDATA?
GPIOD5	ATA2501 STB?
GPIOD6	ATA2501 reset
GPIOD7	ATA2501 SFIMD
GPIOD8	Connected to touch-panel connector
GPIOD9	Connected to touch-panel connector

GPIOE

GPIOE3

Speaker

ADCs

• ADC0 provides an indication of the keypad state for the 'M', '-' and '+' buttons.

Audio

TCC771L? has built-in 24-bit stereo audio codec. It's connected to CPU with I2C? and has address 0x34 and accepts only writes. That seems to be one of the wolfson wm8731.

LW052A? is used to switch between radio and audio. Radio seems to be connected to 1Y0, 2Y0. That means codec is connected to 1Y1, 2Y1 as B pin is always low, and GPIOD0 is connected to A. INH pin is grounded.

USB Boot Mode

The iAudio7 has a USB boot mode, you can enter it by holding down the 'mode' button while plugging in the USB connector. The Vendor/Product id changes to a TCC specific pair (Vendor=140e ProdID=b021), it is then possible to upload code to the device via tcctool (source available in svn tree: http://svn.rockbox.org/viewvc.cgi/trunk/utils/tcctool/ ).

Flashing

The OF does the flashing, so a bad flash will ruin the player until we figure out how to do the USB boot mode properly.

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CategoryFrontpage: Cowon iAudio 7 Port Index [New Ports]