|
Size: 1902
Comment:
|
Size: 2210
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 33: | Line 33: |
| ||9 ||Unknown || | ||9 ||Unknown, but seems to be connected to a transistor near the modem/telephone ciruit|| |
| Line 37: | Line 37: |
| ||13 ||Modem CODEC || ||14 ||Unknown || ||15 ||Unknown || |
||13 ||Modem CODEC - switches CX20442 codec digital inputs between the modem (=1) and the DSP (=0)|| ||14 ||Hookflash? - The amstrad software produces a high pulse on this line when[[BR]]The phone is taken off hook or Recall is pressed|| ||15 ||Hookflash? - As 14. Not sure why 2 pins are needed for this?|| |
Device |
Physical |
Virtual |
latch1 |
0x01000000 |
0xEA000000 |
latch2 |
0x08000000 |
0xEC000000 |
modem |
0x04000000 |
0xEB000000 |
The E3 uses 3 HC377 octal d-type flip-flops to create 1 8-bit and 1 16-bit latch. These are write-only.
latch1 (8 bit)
Bit |
Function |
0 |
Camera LED |
1 |
Advert LED |
2 |
Email LED |
3 |
Handsfree LED |
4 |
Voicemail LED |
5 |
Voice LED |
6 |
Connected to dockit port. Inverted and at 5v levels |
7 |
Connected to dockit port. Inverted and at 5v levels |
latch2 (16 bit)
Bit |
Function |
0 |
LCD VBLEN |
1 |
LCD NDISP |
2 |
NAND NCE |
3 |
NAND NRE |
4 |
NAND NWP |
5 |
NAND NWE |
6 |
NAND ALE |
7 |
NAND CLE |
8 |
Mailboard power - provides +5V to mailboard when set |
9 |
Unknown, but seems to be connected to a transistor near the modem/telephone ciruit |
10 |
Smartcard? |
11 |
Smartcard - CMDVCC |
12 |
Modem NRESET |
13 |
Modem CODEC - switches CX20442 codec digital inputs between the modem (=1) and the DSP (=0) |
14 |
Hookflash? - The amstrad software produces a high pulse on this line whenBRThe phone is taken off hook or Recall is pressed |
15 |
Hookflash? - As 14. Not sure why 2 pins are needed for this? |
There are also 16 bits of GPIO
Bit |
Function |
0 |
Mailboard data (inverted) |
1 |
Mailboard clock (inverted) |
2 |
MODEM IRQ |
3 |
dockit |
4 |
Phone hook |
5 |
Not available - no physical pin |
6 |
Smartcard - NOFF |
7 |
Smartcard - IO |
8 |
Smartcard? (AUX1?) |
9 |
Smartcard? (AUX2?) |
10 |
Not available - no physical pin |
11 |
PROC_CONFIG_0 - 0 = B&W LCD, 1 = colour LCDBRConnected to CONF 0 pads on PCB. 1-2 = colour 2-3 = B&W |
12 |
NAND RB |
13 |
Not available - physical pins used for keypad matrix |
14 |
Not available - physical pins used for keypad matrix |
15 |
Not available - physical pins used for keypad matrix |