EVB-LAN7500-LC SMSC, EVB-LAN7500-LC Datasheet - Page 48

• Manufacturer Part Number: EVB-LAN7500-LC
• Description: EVALUATION BOARD FOR LAN7500
• Manufacturer: SMSC

Specifications of EVB-LAN7500-LC

• Design Resources: EVB-LAN7500-LC BOM EVB-LAN7500-LC Gerber Files EVB-LAN7500-LC Schematic
• Main Purpose: Interface, Ethernet Controller (PHY and MAC)
• Embedded: No
• Utilized Ic / Part: LAN7500
• Primary Attributes: USB 2.0 to 10/100/1000 Ethernet Controller
• Secondary Attributes: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1105; EVB-LAN7500

Revision 1.0 (11-01-10)
7.5.2
SYMBOL
t
pon
Power Sequence Timing
Power supplies must adhere to the following rules:





Note: Violation of these specifications may damage the device.
Note: The VDDVARIO power supply can be run at 2.5V or 3.3V.
Note: The magnetics power supply can be run at 2.5V or 3.3V.
Power supply turn on time
All power supplies of the same voltage must be powered up/down together.
There is no power-up sequencing requirement, however all power supplies must reach operational
levels within the time periods specified in
There is no power-down sequencing or timing requirement, however the device must not be
powered for an extended period of time without all supplies at operational levels.
Following initial power-on, or if a power supply brownout occurs (i.e., one or more supplies drops
below operational limits), a power-on reset must be executed once all power supplies reach
operational levels. Refer to
requirements.
With the exception of VBUS_DET, do not drive input signals without power supplied to the device.
All 3.3V Power
All 2.5V Power
All 1.2V Power
Supply Pins
Supply Pins
Supply Pins
Table 7.15 Power Sequence Timing Values
DESCRIPTION
Figure 7.2 Power Sequence Timing
Section 7.5.3, "Power-On Reset Timing," on page 49
DATASHEET
48
Table
t
7.15.
pon
Hi-Speed USB 2.0 to 10/100/1000 Ethernet Controller
MIN
0
TYP
SMSC LAN7500/LAN7500i
for power-on reset
MAX
25
Datasheet
UNITS
mS