USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
4.5
AC Specifications
This section details the various AC timing specifications of the LAN9514/LAN9514i.
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.
4.5.1
Equivalent 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
4.5.2
Reset 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/LAN9514i
Revision 1.0 (11-24-09)
DATA4S3HEET
SMSC [ SMSC CORPORATION ]
