Datasheet

88
9166DS–AVR-01/12
AT32UC3C
Note: 1. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
cess technology. These values are not covered by test limits in production.
Figure 7-21. Ethernet MAC RMII Mode
Table 7-61. Ethernet MAC RMII Specific Signals
(1)
Symbol Parameter Conditions Min. Max. Unit
MAC
21
TX_EN toggling from TX_CLK rising
V
VDD
= 3.0V,
drive strength of the pads set to the
highest,
external capacitor = 10pF on MACB
pins
12.5 13.4 ns
MAC
22
TXD toggling from TX_CLK rising 12.5 13.4 ns
MAC
23
Setup for RXD from TX_CLK 4.7 ns
MAC
24
Hold for RXD from TX_CLK 0 ns
MAC
25
Setup for RX_ER from TX_CLK 3.6 ns
MAC
26
Hold for RX_ER from TX_CLK 0 ns
MAC
27
Setup for RX_DV from TX_CLK 4.6 ns
MAC
28
Hold for RX_DV from TX_CLK 0 ns
TX_CLK
TX_EN
MAC
22
TXD[1:0]
RXD[3:0]
MAC
25
MAC
26
MAC
27
MAC
28
RX_ER
RX_DV
MAC
21
MAC
23
MAC
24