Data Sheet

Electrical/Mechanical Specification—Ethernet Controller I210
787
11.3.1.2 Power-On Reset Thresholds
The I210 internal power-on reset circuitry initiates a full chip reset when voltage levels of power
supplies reach certain thresholds at power-up.
Note: The POR circuit only generates a reset during the power up but does not monitor the power
levels after power is stable. Therefore, it does not generate any reset in power-down or when
power levels decrease.
11.4 Ball Summary
See Chapter 2.0 for balls description and ball out map.
Figure 11-1. Power and Reset Sequencing
Table 11-3. Power-on Reset Thresholds
Symbol Parameter
Specifications
Units
Min Typ Max
VTh3.3 Threshold for 3.3 V power supply in power-up 0.96 1.2 1.44 V
VTh0.9 Threshold for 0.9 V power supply in power-up 0.52 0.66 0.8 V
VTh1.5 Threshold for 1.5 V power supply in power-up 0.88 1.1 1.32 V
VCC1p5 (1.5V)
INTERNAL_POWER
_ON_RESET
VCCP (3.3V)
Aux power stable
Main power stable
Tlpg
Tlpg-per
Tm-per
Main Power stable
Tper-m
VCC/VCC0p9(0.9V)
T3_15
PE_RST_N
T3_09
Tlpgw
Typ 6.5 ms; Max 7.5 ms