PIC32MX1XX Datasheet, PDF (122/320 Pages) Microchip Technology – 32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

PIC32MX1XX/2XX
FIGURE 10-1:
PIC32MX1XX/2XX FAMILY USB INTERFACE DIAGRAM
OSC1
OSC2
Bus
D+⁽¹⁾
D-⁽¹⁾
ID⁽⁷⁾
VBUSON⁽⁷⁾
VUSB3V3
Primary Oscillator
(POSC)
FRC
Oscillator
8 MHz Typical
UFIN⁽⁴⁾
Div x
PLL
UPLLIDIV⁽⁵⁾
TUN<5:0>⁽³⁾
Div 2
UPLLEN⁽⁵⁾
UFRCEN⁽²⁾
SRP Charge
SRP Discharge
Full Speed Pull-up
Host Pull-down
Low Speed Pull-up
Transceiver
USB Module
USB
Voltage
Comparators
48 MHz USB Clock⁽⁶⁾
Registers
and
Control
Interface
SIE
Host Pull-down
ID Pull-up
DMA
System
RAM
Transceiver Power 3.3V
Note 1:
2:
3:
4:
5:
6:
7:
Pins can be used as digital inputs when USB is not enabled.
This bit field is contained in the OSCCON register.
This bit field is contained in the OSCTRM register.
USB PLL UFIN requirements: 4 MHz.
This bit field is contained in the DEVCFG2 register.
A 48 MHz clock is required for proper USB operation.
Pins can be used as GPIO when the USB module is disabled.
DS61168D-page 122
Preliminary
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