AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 307

• Manufacturer Part Number: AT90USB1286-16MU
• Description: Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
• Manufacturer: ATMEL [ATMEL Corporation]

7593A–AVR–02/06
- 110: 512
- 111: 1024
• 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 pulling period for an Interrupt Pipe.
This value has no effect for a non-Interrupt Pipe.
• 7 - CFGOK - Configure Pipe Memory OK
Set by hardware if the required memory configuration has been successfully performed.
Cleared by hardware when the pipe is disabled. The USB reset and the reset pipe have no effect
on the configuration of the pipe.
• 6 - OVERFI - Overflow
Set by hardware when a the current Pipe has received more data than the maximum length of
the current Pipe. An interrupt is triggered if the FLERRE bit is set.
Shall be cleared by software. Setting by software has no effect.
• 5 - UNDERFI - Underflow
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
INTFRQ7
CFGOK
RW
R
7
0
7
0
INTFRQ6
OVERFI
RW
RW
6
0
6
0
UNDERFI
INTFRQ5
RW
RW
5
0
5
0
INTFRQ4
RW
4
0
-
4
0
INTFRQ3
RW
R
3
0
3
0
DTSEQ1:0
INTFRQ2
RW
R
2
0
0
AT90USB64/128
2
INTFRQ1
RW
R
1
0
1
0
NBUSYBK
INTFRQ0 UPCFG2X
RW
R
0
0
0
0
UPSTAX
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