GPIO list for e800

GRER: 00600501 40001000 00020800
GFER: 004204A1 40001000 00000800
GPDR   : cb99e804 80ff2b83 00fde7fe
GPIO AF: a5000012 00400004 0005aaaa 609a9558 00005002 a0004000


0  1  2  3  4  5  6  7  8  9  10 11 12 13 14 15 16 17 18 19
I     o  i  I  i  i  i  i  I   I     i  o  o  o     I     O
   a                              a              A     a

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
 o  I  I  o  o  o  i  o             O                     
                         a  a  A  A     A  a  a  a  a  a  A

40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
             I  O                                      i  i
 A  A  a  A        A  a  A  A  A  A  A  A  A  A  a  a             

60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
 i  i  i  o  i  o  o  O  O  o  O  o  o  O  O  I  i  o  
                                  a                    A  A

80 81 82 83 84 85 86 87 88 89 90
 o  I  O  O  O  o        o  o  o 
 A                 a  a


I known input
i unknown input
O known output
o unknown output
A = alt 10
a = alt 01

Inputs / irqs: 3 5 6 12 26 58 59 60 61 62 64 76
0:  power btn
4:  USB detect
7:  Keypad IRQ
8:  ASIC2 IRQ
9:  SD detect
10: battery lock (guess based on e7xx)
17: battery charging
21: Touchscreen busy  (only on wince)
22: AC present
26: ??? Battery type (guess based on e7xx)
44: WiFi switch
75: hold button
64: ??? battery type (uncertain)
81: Headphone detect

outputs: 2 14 15 23 24 25 27 63 65 66
        69 71 72 77 80 85 88 89 90

13: Backlight control (only on wince)
19: ??? crashes the PDA? 
20: Almost certainly CF power enable
23: Makes speaker click.
32: ??? Causes a blank screen if cleared. PDA continues working.
45: 'suspends' the TMIO
65: makes speaker click.
67: power control to imageon? (makes display upset if cleared)
68: power control to imageon? (makes display upset if cleared)
70: 
73: WiFi power enable.

70 and 73 Control the WiFi / status LED thus:
	70   73   Led
         1    1   0
         1    0   0
         0    1   1
	 0    0   0

74: imageon reset? (seriously screws it if cleared)
77: poss. WiFi related
82: enable headphone (when cleared)
83: enable speaker (when set)
84: USB disconnect when high



alt fn:
1:  Reset sw.
16: Possibly backlight brightness
56,57: CF card insert go low