Datasheet

298
7593L–AVR–09/12
AT90USB64/128
• 7 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 6-4 - PSIZE2:0 - Pipe Size
Select the size of the Pipe:
- 000: 8 - 100: 128 (only for endpoint 1)
- 001: 16 - 101: 256 (only for endpoint 1)
- 010: 32 - 110: Reserved. Do not use this configuration.
- 011: 64 - 111: Reserved. Do not use this configuration.
• 3-2 - PBK1:0 - Pipe Bank
Select the number of bank to declare for the current Pipe.
- 00: 1 bank
- 01: 2 banks
- 10: invalid
- 11: invalid
• ALLOC - Configure Pipe Memory
Set to configure the pipe memory with the characteristics.
Clear to update the memory allocation. Refer to the Memory Management chapter for more
details.
7 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 7 - INTFRQ7:0 - Interrupt Pipe Request Frequency
These bits are the maximum value in millisecond of the polling period for an Interrupt Pipe.
This value has no effect for a non-Interrupt Pipe.
Bit 7 6 5 4 3 2 1 0
- PSIZE2:0 PBK1:0 ALLOC - UPCFG1X
Read/write R RW RW RW RW RW RW
Initial value 0 0 0 0 0 0 0 0
Bit 76543210
INTFRQ7 INTFRQ6 INTFRQ5 INTFRQ4 INTFRQ3 INTFRQ2 INTFRQ1 INTFRQ0 UPCFG2X
Read/write RW RW RW RW RW RW RW RW
Initial value00000000