LAN9514 datasheet(43/54 Pages) MICROCHIP

Part #	LAN9514

Description	USB 2.0 Hub and 10/100 Ethernet Controller

PDF	54 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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43 / 54 page

 2009-2016 Microchip Technology Inc.

DS00002306A-page 43

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 25 pF equivalent test load illustrated in Figure 4-1 below.

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.

4.5.3

EEPROM TIMING

The following specifies the EEPROM timing requirements for LAN9514/LAN9514i:

FIGURE 4-1:

OUTPUT EQUIVALENT TEST LOAD

FIGURE 4-2:

EEPROM TIMING

25 pF

OUTPUT

EECLK

EEDO

EEDI

EECS

tckldis

tcshckh

EEDI (VERIFY)

tckh

tckl

tckcyc

tcklcsl

tcsl

tdvckh tckhdis

tdsckh

tdhckh

tdhcsl

tcshdv

LAN9514 Datasheet(PDF) 43 Page - Microchip Technology