Specifications

RX62N Group Ethernet Transmit and Receive Settings
ET_MDC
MDI
(1) (3)(2)
1-bit data read timing relationship
(1) Write to PHY
interface register
PIR.MMD = 0
PIR.MDC
= 1
(3) Write to PHY
interface register
PIR.MMD = 0
PIR.MDC
= 0
(2) Read from PHY
interface register
PIR.MMD = 0
PIR.MDC
= 1
PIR.MDI is read data
Figure 3.6 1-Bit Data Read Sequence
Independent bus release timing relationship
ET_MDC
MDO
(1)
(1) Write to PHY
interface register
PIR.MMD = 0
PIR.MDC = 0
Figure 3.7 Independent Bus Release Sequence (IDLE During Write)
Table 3.1 MDC/MDIO I/O Timing
Item Symbol Min. Max. Unit
MDC high-level pulse width t
1
160 ns
MDC low-level pulse width t
2
160 ns
MDC cycle time t
3
400 ns
MDIO setup time t
4
10 ns
MDIO hold time t
5
10 ns
MDIO output delay time t
6
0 300 ns
MDC
MDIO
(EtherC output)
MDIO
(PHY output)
t
4
t
5
t
6
t
1
t
2
t
3
Figure 3.8 MDC/MDIO I/O Timing
R01AN0629EJ0101 Rev.1.01 Page 9 of 52
Mar 31, 2011