SH7710 Datasheet, PDF (763/996 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 18 Ethernet Controller (EtherC)
(1) Write to PHY interface
register
MMD = 0
MDC = 0
(2) Write to PHY interface
register
MMD = 0
MDC = 1
MDC
MDO
(1) (2)
(3)
Bus release timing
relationship
(3) Write to PHY interface
register
MMD = 0
MDC = 0
Figure 18.9 (2) Bus Release Flowchart (TA in Read in Figure 18.8)
(1) Write to PHY interface
register
MMD = 0
MDC = 1
(2) Read from PHY
interface register
MMD = 0
MMC = 1
MDI is read data
MDC
MDI
(1) (2) (3)
1-bit data read timing
relationship
(3) Write to PHY interface
register
MMD = 0
MDC = 0
Figure 18.9 (3) 1-Bit Data Read Flowchart
Rev. 2.00 Dec. 07, 2005 Page 721 of 950
REJ09B0079-0200