Datasheet

Section 20 Ethernet Controller (EtherC)
Rev. 2.00 Aug. 20, 2008 Page 784 of 1198
REJ09B0403-0200
MDC
MDI
(1) (2)
(3)
(1) Write to PHY interface register
MMD = 0
MDC = 1
(3) Write to PHY interface register
MMD = 0
MDC = 0
(2) Write to PHY
interface register read
MMD = 0
MMC = 1
MDI is read data
Figure 20.10 1-Bit Data Read Flowchart
MDC
MDO
(1)
(1) Write to PHY interfaceregister
MMD = 0
MDC = 0
Figure 20.11 Independent Bus Release Flowchart (IDLE in Write in Figure 20.7)