General Procedures / Information
FaxCentre F110 12/04 6-53
GP 20 USB Device
Note: Input or Output direction from the Digicolor2 side.
Note: An external transistor circuit drive the pull-up resistor (1.5KW) on the D+ signal for high
speed USB device. The transistor protects Digicolor I/O from abnormal connection.
Table 1:
USB Slave I/O Level Digicolor2 Signal
USB_B_P I 1 PP_DRIVE USB Bus Power
USB_O O 1 PP_D1 High speed mode
D+ I/O - USB_DP data
D - I/O - USB_DM data