view pirelli/refdes @ 370:844f884e0171

pirelli/vibrator-ctrl: additional observations
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 29 May 2021 18:23:34 +0000
parents 10de8a00c519
children
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Because the "official" reference designators used by the original designers of
the T60N925 board are unknown (no schematics cound be found and there are no
refdes silkscreen markings), we have to invent our own new refdeses as part of
the reverse engineering effort.  Here are the refdeses I have assigned to the
major components:

Connectors on the battery/SIM side:

J1 = USB connector
J2 = headset jack
J3 = battery connector
J4 = SIM socket
J5 = camera connector
J6 = loudspeaker connects here
J7 = GSM antenna test connector
J8 = WLAN antenna test connector

Connectors on the display/keypad side:

J9 = LCD connector
J10 = keypad board-to-board connector
J11 = debug FPC connector
J12 = vibrating motor connects here

MIC1 = microphone

Contact pads on the battery/SIM side:

PAD1 = GSM antenna connection pad
PAD2 = associated ground pad
PAD3 = WLAN antenna connection pad
PAD4 = associated ground pad

Contact pads on the display/keypad side:

PAD5 = earpiece connection pad, left as seen from the front
PAD6 = earpiece connection pad, right as seen from the front

Pushbutton switches:

SW1 = volume up
SW2 = volume down
SW3 = camera button

Major ICs on the battery/SIM side:

U1 = Calypso
U2 = TWL3014 (Iota)
U3 = Marvell 88W8385
U4 = GSM RF transceiver (TRF6151)
U5 = GSM RF PA (SKY77328-13)
U6 = GSM antenna switch
U7 = Marvell 88W8015

Major ICs on the display/keypad side:

U8 = S71PL129NC0 flash+RAM
U9 = SPCA552E
U10 = LSI ASIC
U11 = W56940 (ringtone chip)
U12 = CP2102

Crystal oscillators:

Y1 = xtal in the GSM RF shieldcan
Y2 = xtal in the WLAN RF shieldcan