Datasheet

1183
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
45.15.5.4 RMII Mode
Figure 45-24. EMAC RMII Timings
45.15.6 USART in SPI Mode
45.15.6.1 Timing Conditions
Timings are given assuming a capacitance load on MISO, SPCK and MOSI as defined in Table 45-46.
Table 45-45. RMII Mode
Symbol Parameter Min Max Unit
EMAC
21
ETXEN toggling from EREFCK rising 2 16 ns
EMAC
22
ETX toggling from EREFCK rising 2 16 ns
EMAC
23
Setup for ERX from EREFCK rising 4 ns
EMAC
24
Hold for ERX from EREFCK rising 2 ns
EMAC
25
Setup for ERXER from EREFCK rising 4 ns
EMAC
26
Hold for ERXER from EREFCK rising 2 ns
EMAC
27
Setup for ECRSDV from EREFCK rising 4 ns
EREFCK
ETXEN
ETX[1:0]
ERX[1:0]
ERXER
ECRSDV
EMAC
21
EMAC
22
EMAC
23
EMAC
24
EMAC
25
EMAC
26
EMAC
27
EMAC
28
Table 45-46. Capacitance Load for MISO, SPCK and MOSI (product dependent)
Supply
Corner
Max Min
3.3V 40 pF 0 pF
1.8V 20 pF 0 pF