Datasheet

558
32117D–AVR-01/12
AT32UC3C
24.7.47 User Input/Output Register
Name: USRIO
Access Type: Read/Write
Offset: 0xC0
Reset Value: 0x00000000
This register, when read, returns details of the status of a receive. Once read, individual bits 0 to 3 may be cleared by writ-
ing a one to them. It is not possible to write a bit to one by writing to the register.
• WOL: Wake-On LAN
0: Wake-on LAN not detected.
1: Wake-on LAN detected (read-only).
• SPD: Speed
Image of NCFGR.SPD bit (read-only).
• BR: Bitrate
Image of NCFGR.BR bit (read-only).
• HD: Half Duplex
Inversion of NCFGR.FD bit (read-only).
• LB: Loopback
Image of NCR.LB bit (read-only).
• TPZ: Transmit Pause Frame Zero Quantum
0: Pause frame is TPQ register value quantum length.
1: Pause frame is zero quantum length.
• TP: Transmit Pause Frame
Toggle this bit to send a Pause frame.
• EAM: External Address Match
0: No frame is copied to memory.
1: Frame is copied to memory if NCFGR.EAE is set.
• RMII: RMII mode
0: RMII operation mode.
1: MII operation mode.
31 30 29 28 27 26 25 24
--------
23 22 21 20 19 18 17 16
- - - WOL SPD BR HD LB
15 14 13 12 11 10 9 8
--------
76543210
----TPZTPEAMRMII