AT89C5132_06 Datasheet, PDF (78/181 Pages) ATMEL Corporation – USB Microcontroller with 64K Bytes Flash Memory

Bit
Bit
Number Mnemonic Description
7-4
-
Reserved
The values read from these Bits are always 0. Do not set these Bits.
Endpoint 3 FIFO Reset
3
EP3RST Set and clear to reset the endpoint 3 FIFO prior to any other operation, upon
hardware reset or when an USB bus reset has been received.
Endpoint 2 FIFO Reset
2
EP2RST Set and clear to reset the endpoint 2 FIFO prior to any other operation, upon
hardware reset or when an USB bus reset has been received.
Endpoint 1 FIFO Reset
1
EP1RST Set and clear to reset the endpoint 1 FIFO prior to any other operation, upon
hardware reset or when an USB bus reset has been received.
Endpoint 0 FIFO Reset
0
EP0RST Set and clear to reset the endpoint 0 FIFO prior to any other operation, upon
hardware reset or when an USB bus reset has been received.
Reset Value = 0000 0000b
Table 64. UEPINT Register
UEPINT (S:F8h Read-only) – USB Endpoint Interrupt Register
7
6
5
4
3
2
-
-
-
-
EP3INT EP2INT
1
EP1INT
0
EP0INT
Bit
Bit
Number Mnemonic Description
7-4
-
Reserved
The values read from these Bits are always 0. Do not set these Bits.
Endpoint 3 Interrupt Flag
3
EP3INT
Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 3
interrupt is enabled in UEPIEN.
Must be cleared by software.
Endpoint 2 Interrupt Flag
2
EP2INT
Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 2
interrupt is enabled in UEPIEN.
Must be cleared by software.
Endpoint 1 Interrupt Flag
1
EP1INT
Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 1
interrupt is enabled in UEPIEN.
Must be cleared by software.
Endpoint 0 Interrupt Flag
0
EP0INT
Set by hardware when an interrupt is triggered in UEPSTAX and the endpoint 0
interrupt is enabled in UEPIEN.
Must be cleared by software.
Reset Value = 0000 0000b
Table 65. UEPIEN Register
UEPIEN (S:C2h) – USB Endpoint Interrupt Enable Register
7
6
5
4
3
2
1
0
-
-
-
-
EP3INTE EP2INTE EP1INTE EP0INTE
78 AT89C5132
4173D–USB–02/06