AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 312

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

312
AT90USB64/128
• 7-0 - PDAT7:0 - Pipe Data Bits
Set by the software to read/write a byte from/to the Pipe FIFO selected by PNUM.
• 7-3 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 2-0 - PBYCT10:8 - Byte count (high) Bits
Set by hardware. This field is the MSB of the byte count of the FIFO endpoint. The LSB part is
provided by the UPBCLX register.
• 7-0 - PBYCT7:0 - Byte Count (low) Bits
Set by the hardware. PBYCT10:0 is:
- (for OUT Pipe) increased after each writing into the Pipe and decremented after each byte
sent,
- (for IN Pipe) increased after each byte received by the host, and decremented after each byte
read by the software.
• 7 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 6-0 - PINT6:0 - Pipe Interrupts Bits
Set by hardware when an interrupt is triggered by the UPINTX register and if the corresponding
endpoint interrupt enable bit is set.
Cleared by hardware when the interrupt source is served.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
PBYCT7
7
0
R
-
7
0
7
0
-
PBYCT6
PINT6
6
0
-
R
6
0
6
0
PBYCT5
PINT5
5
0
-
R
5
0
5
0
PBYCT4
PINT4
4
0
-
R
4
0
4
0
PBYCT3
PINT3
3
0
-
R
3
0
3
0
PBYCT10
PBYCT2
PINT2
R
2
0
R
2
0
2
0
PBYCT9
PBYCT1
PINT1
R
1
0
1
R
0
1
0
PBYCT8
PBYCT0
PINT0
R
0
0
0
R
0
0
0
7593A–AVR–02/06
UPBCHX
UPBCLX
UPINT