Rainbow Electronics AT91CAP9S250A - Manual (Page 821)

821
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
42.5.12 PHY Maintenance Register
Register Name: EMAC_MAN
Access Type: Read/Write
• DATA
For a write operation this is written with the data to be written to the PHY.
After a read operation this contains the data read from the PHY.
• CODE:
Must be written to 10. Reads as written.
• REGA: Register Address
Specifies the register in the PHY to access.
• PHYA: PHY Address
• RW: Read/Write
10 is read; 01 is write. Any other value is an invalid PHY management frame
• SOF: Start of frame
Must be written 01 for a valid frame.
31 30 29 28 27 26 25 24
SOF RW PHYA
23 22 21 20 19 18 17 16
PHYA REGA CODE
15 14 13 12 11 10 9 8
DATA
7 6 5 4 3 2 1 0
DATA