Panasonic KX-TG6861

con PP:

- DSPG chipset

pro PP:

- SPI flash should be read and writable easily

- cheap, 25€ at store, FP with PP

- ARM926

- JTAG pins exposed (and labelled)

pro FP:

- dialog SC14441

con FP:

Pins

    GND  -5.5V
    URX  UTX

UART seems to be 1V8, 19200 baud, at boot prints



OK1



pressing ?<CR> responds with There is no help

every upper and lower case single char followed by <CR> prints command unknown

might be incomplete/too long found by brute forcing three-char commands

ada
adc - start ADC0 and ADC1 sampling, and print to uart
adj
ads
akt
ant
aud
bel
bof
bom
bon
btc
bts
btx
buz
cbc
cgs
cid
cli
cps
crx
cwc
dbm
dmv
dto
ecb
ecc
ecw
epc
epd
epf
epr
eps
epv
epw
esc
fer
fld
fle
flr
fls
gtl
hok
hrl
hsl
ide
idf
idg
idr
idw
key
lcd
led
lim
lnv
lpr
mgr
mgw
mic
mip
mmn
moc
mss
mtx
ner
new
odb
odh
odl
pal
pan
pap
pdl
per
pew
pid
ply
rcd
rci
rec
red
reg
rfa
rfb
rfd
rfq
rfr
rft
rfw
rgs
rio
rss
rst
rwd
scr
sdh
sdl
sfr
sgr
sgw
slf
smr
sms
srl
stp
tdt
tpc
trc
tst
vac
vda
vdd
ver - print version
vfw
vpd
vpe
vpi
vpl
vrd
vrg
vrm
vse
vwt
wcr
wgs
wrt
wwd

- IC501: dialog SC14441

- IC601: P25Q16L 1.8V single/dual/quad SPI flash 16MBit

- IC502: 25Q16JWSIM winbond 1.8V dual/quad SPI flash 16MBit

- IC902: PH408A 8bit GPIO expander I2C

strange, why two SPI flashes of same size from different vendors?

- audio

1. bottom mic THT
2. speaker w/ soldered wires, blu top, red bot
3. earpiece speaker: spring contact, falls apart/disconnected with case open

- RF

1. under metal can, arrow towards bot
2. DSP group
3. DCX81ACPCFAE4FNC
4. © (M) 2010 DSPG
5. 88 pin
6. 

- PCB

1. IC2 SOIC8
   1. winbond
   2. 25Q80EWSIG
   3. 8Mbit NOR flash, SPI (dual/quad) or QPI
   4. 1MByte
   5. 1.8V
   6. 
2. IC3 SOIC8
   1. ST 24C32FP
   2. 32Kbit I2C EEPROM
   3. 4kBytes
   4. 
3. labelled pads, left, under ant, from top to bottom
   1. GND_J
   2. TDO
   3. TDI
   4. TCK
   5. TMS
   6. CKM
   7. VDDC = 1.16V
   8. CP3V = 3.05V

1. labelled pads, right
   1. 1.8V = 1.82V
   2. CP4V = 2.95V

- voltages

1. JTAG
   1. VDDC = 1.16V
   2. CP3V = 3.05V
2. IC2 flash
   1. 1.8V
3. IC3 EEPROM
   1. 3.0V