Datasheet

54.14.4 GMAC Characteristics
Timing Conditions
Table 54-59. GMAC Load Capacitance on Data, Clock Pads
Symbol Description Condition Min. Max. Units
C
L
Load
Capacitance
V
DD
=3.3V 0 20 pF
Timing Constraints
The GMAC must be constrained so as to satisfy the timings of standards given the following two tables, in
MAX corner.
Table 54-60. Minimum and Maximum Access Time of GMAC Output Signals
Symbol Parameter Min. Max. Units
GMAC
1
Setup for GMDIO
from GMDC rising
10 - ns
GMAC
2
Hold for GMDIO
from GMDC rising
10 -
GMAC
3
GMDIO toggling
from GMDC falling
0
(1)
10
(1)
Note:
1. For GMAC output signals, min. and max. access times are defined:
– The min. access time is the time between the GMDC falling edge and the signal change.
– The max. access time is the time between the GMDC falling edge and the signal stabilizes.
Figure 54-17. Minimum and Maximum Access Time of GMAC Output Signals
GMDC
GMDIO
GMAC
3 max
GMAC
1
GMAC
2
GMAC
4
GMAC
5
GMAC
3 min
SAM D5x/E5x Family Data Sheet
Electrical Characteristics at 85°C
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 2026