--- /dev/null
+Here we try to document what we know about the EEPROM Structure.
+
+Even with a 93xx66 EEPROM, at maximum 256 Bytes are used
+
+All important things happen in the first
+0x14(FT232/245), 0x16(FT2232CD), 0x18(FT232/245R) or 0x1a (FT2232H/4432H)
+bytes
+
+Type | Use Extra EEPROM Space
+FT2XXB | No
+
+Byte.BIT| TYPE_AM TYPE_BM TYPE_2232C TYPE_R TYPE_2232H TYPE_4232H
+00.0 | 0 0 channel_a_type channel_a_type channel_a_type
+00.1 | 0 0 channel_a_type channel_a_type channel_a_type
+00.2 | 0 0 channel_a_type high_current channel_a_type channel_a_type
+00.3 | 0 0 channel_a_driver channel_a_driver channel_a_driver channel_a_driver
+00.4 | 0 0 high_current_a 0 0 0
+00.5 | 0 0 0 0 0 0
+00.6 | 0 0 0 0 0 0
+00.7 | 0 0 0 0 SUSPEND_DBUS7 0
+
+On TYPE_R 00.3 set mean D2XX, on other devices VCP
+
+01.0 | 0 0 channel_b_type channel_b_type channel_b_type
+01.1 | 0 0 channel_b_type channel_b_type channel_b_type
+01.2 | 0 0 channel_b_type 0 channel_b_type channel_b_type
+01.3 | 0 0 channel_b_driver 0 channel_b_driver channel_b_driver
+01.4 | 0 0 high_current_b 0 0 0
+01.5 | 0 0 0 0 0 0
+01.6 | 0 0 0 0 0
+01.7 | 0 0 0 0 0 0
+
+Fixme: Missing 4232H validation and channel_c_driver, channel_d_driver, channel_a|b|c|d_rs484enable
+
+02 | VID-LSB(all)
+03 | VID-MSB(all)
+04 | PID-LSB(all)
+05 | PID-MSB(all)
+06 | REL-LSB (not tested on TYPE_AM, TYPE_BM and TYPE_4232H)
+07 | REL-MSB (not tested on TYPE_AM, TYPE_BM and TYPE_4232H)
+ |
+08.4 | Self-Wakeup
+08.5 | Remote-Wakeup
+08.6 | Self-Powered
+08.7 | Always 1
+ |
+09 | MaxPower(maA/2)
+ |
+Byte.BIT| TYPE_AM TYPE_BM TYPE_2232C TYPE_R TYPE_2232H TYPE_4232H
+0a.0 | 0 IsoIn
+0a.1 | 0 IsoOut
+0a.2 | 0 suspend_pull_down suspend_pull_down suspend_pull_down
+0a.3 | 0 use_serial use_serial
+0a.4 | 0 change_usb_version change_usb_version
+ |
+0b | TYPE_R Bitmask Invert, 0 else
+
+Byte | TYPE_AM TYPE_BM TYPE_2232C TYPE_R TYPE_2232H TYPE_4232H
+0c | ? USB-VER-LSB USB-VER-LSB 0 ? ?
+0d | ? USB-VER-MSB USB-VER-MSB 0 ? ?
+On several FT2232H different values were observed
+
+
+0e | OFFSET Vendor
+0f | Len VENDOR
+
+10 | Offset Product
+11 | Length Product
+
+12 | Offset Serial
+13 | Length Serial
+
+Byte.BIT| TYPE_AM TYPE_BM TYPE_2232C TYPE_R TYPE_2232H TYPE_4232H
+14.3:0 | UA UA CHIP CBUS[0] AL A
+14.7:0 | UA UA CHIP CBUS[1] AH B
+15.3:0 | UA UA 0 CBUS[2] BL C
+15.7:0 | UA UA 0 CBUS[3] BH D
+16.3:0 | UA UA UA CBUS[4] 0 0
+16.7:0 | UA UA UA 0 0 0
+
+17 UA UA UA 0 0 0
+18 UA UA UA VENDOR CHIP CHIP
+19 UA UA UA VENDOR 0 0
+
+1a UA(all)
+
+Mprog doesn's seem to write this:
+After last string
+0x02 0x03 0x01 with PnP == 0
\ No newline at end of file