Sony NWZ-E440

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Overview

This is the page for the Sony NWZ-E440 series (NWZ-E443, NWZ-E444, NWZ-E445)

Port status

There is some code to make the lcd/button/audio works work but we have no support for the raw nand flash. Since this is a huge piece of work and there is no sdcard slot, there is no plan to port rockbox to this player.

Hardware

The Sony NWZ-E440 features 11 hardware buttons: power/option, play/pause, left, right, up, down, home/back, volume up, volume down, hold, reset. The following chips can be found on the PCB:

• STMP3780 (see SigmaTelSTMP3xxx or STMP37xxChips)
• a mobile DDR
• a raw nand flash
• the STFM1000 tuner chip
• a LCD controller (same as in SonyNWZE360)

Recovery Mode

One can reach the recovery mode by powering off the unit and plug the USB cable while holding the power button. There are two other alternative methods:

• power on the player (without USB cable plugged), hold power and plug the USB cable while holding power for at least one or two seconds
• plug the USB cable, hold power and press the reset button while holding power for at least one or two seconds

PCB Scans

The PCB is quite hard to access, I didn't risk damaging my player.

Pins

Here is a list of all the pins used by the OF. Pins are of form BxPyy where x is the bank and yy the number within the bank. Direction only applies to GPIO.

Pin	Dir	Comment
B0P0{0-7}	ssp2_d{0-7}
B0P09	IN	Hold (active low, needs pullup)
B0P10	OUT	Backlight gate
B0P14	OUT/uartapp2_rx	WM-Port RxD
B0P15	IN/uartapp2_tx	WM-Port TxD
B0P20	ssp2_cmd
B0P24	ssp2_sck
B0P{30,31}	i2c_{scl,sda}	tuner i2c
B1P{00-7}	lcd_d{0-7}
B1P18	lcd_reset
B1P19	lcd_rs
B1P20	lcd_wr
B1P28	pwm2	Backlight
B1P29	OUT	Internal storage power gate
B2P03	IN	Used to determine device variant
B2P04	IN	Used to determine device variant

Device variant are as follows (see section below for comment):

B2P04	B2P03	Device
0	0	NWZ-E340
0	1	NWZ-E440 or NWZ-E440K
1	0	NWZ-BB
1	1	NWZ-S540

Models

Apparently the same firmware is used for several players. The model is determined from two pins and/or the MMC. The following players are handled: E340, E360, E440, E440K, S540, BB.

-- AmauryPouly - 09 Oct 2013