Atmel AVR XMEGA AU series User Manual

251
8331B–AVR–03/12
Atmel AVR XMEGA AU
20.13.7 EPPTRL – Endpoint Configuration Table Pointer Low Byte
The EPPTRL and EPPTRH registers represent the 16-bit value, EPPTR, that contains the
address to the endpoint configuration table. The pointer to the endpoint configuration table must
be aligned to a 16-bit word; i.e., EPPTR[0] must be zero. Only the number of bits required to
address the available internal SRAM memory is implemented for each device. Unused bits will
always be read as zero.
• Bit 7:0 – EPPTR[7:0]: Endpoint Configuration Table Pointer
This register contains the eight lsbs of the endpoint configuration table pointer (EPPTR).
20.13.8 EPPTRH – Endpoint Configuration Table Pointer High byte
• Bit 7:0 – EPPTR[15:8]: Endpoint Configuration Table Pointer
This register contains the eight msbs of the endpoint configuration table pointer (EPPTR).
20.13.9 INTCTRLA – Interrupt Control register A
• Bit 7 – SOFIE: Start Of Frame Interrupt Enable
Setting this bit enables the start of frame (SOF) interrupt for the conditions that set the start of
frame interrupt flag (SOFIF) in the INTFLAGSACLR/ INTFLAGSASET register. The INTLVL bits
must be nonzero for the interrupts to be generated.
• Bit 6 – BUSEVIE: Bus Event Interrupt Enable
Setting this bit will enable the interrupt for the following three bus events:
1. Suspend: An interrupt will be generated for the conditions that set the suspend interrupt
flag (SUSPENDIF) in the INTFLAGSACLR/SET register.
2. Resume: An interrupt will be generated for the conditions that set the resume interrupt
flag (RESUMEIF) in the INTFLAGSACLR/SET register.
3. Reset: An interrupt will be generated for the conditions that set the reset interrupt flag
(RESETIF) in the INTFLAGSACLR/SET register.
The INTLVL bits must be nonzero for the interrupts to be generated.
Bit 76543210
+0x06 EPPTR[7:0] EPPTRL
Read/Write R/W R/W R/W R/W R/W R/W R/W R
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
+0x07 EPPTR[15:8] EPPTRH
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
+0x06 SOFIE BUSEVIE BUSERRIE STALLIE – – INTLVL[1:0] INTCTRLA
Read/Write R/W R/W R/W R/W R R R/W R/W
Initial Value00000000

Atmel AVR XMEGA AU series Specifications

General

Brand	Atmel
Model	AVR XMEGA AU series
Category	Microcontrollers
Language	English