Intermec 074787-001 Manual De Usuario
Chapter 2 — Theory of Operation
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PB42 Portable Receipt Printer Service Manual
Voltage Levels of an Individual Dot of the Printhead Test
Communication Interfaces
USB
U1 has USB host and function capability, but only the function capability
will be used. (USMOD[HOST] = 0)
will be used. (USMOD[HOST] = 0)
The hardware can be configured as either a low speed or a full speed device.
Full speed is default.
Full speed is default.
The USB transceiver (U14) is connected to the MPC875 USB interface
pins. In addition to those pins, the transceiver also has a SUSPND pin.
This is connected to PB23. A high on this pin puts the transceiver into low
power mode.
pins. In addition to those pins, the transceiver also has a SUSPND pin.
This is connected to PB23. A high on this pin puts the transceiver into low
power mode.
This section will describe the hardware-related configuration for the USB
function controller.
function controller.