USB Hub with Integrated 10/100 Ethernet Controller

Datasheet

4.5AC Specifications

This section details the various AC timing specifications of the LAN9514.

Note: The USBDP and USBDM pin timing adheres to the USB 2.0 specification. Refer to the Universal Serial Bus Revision 2.0 specification for detailed USB timing information.

4.5.1Equivalent Test Load

Output timing specifications assume the 25pF equivalent test load illustrated in Figure 4.1 below.

OUTPUT

25 pF

Figure 4.1 Output Equivalent Test Load

4.5.2Reset Timing

The nRESET pin input assertion time must be a minimum of 1 μS. Assertion of nRESET is not a requirement. However, if used, it must be asserted for the minimum period specified.

SMSC LAN9514

43

Revision 1.0 (04-20-09)

 

DATASHEET