Datasheet

 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
t
ckldis
t
cshckh
EEDI (VERIFY)
t
ckh
t
ckl
t
ckcyc
t
cklcsl
t
csl
t
dvckh
t
ckhdis
t
dsckh
t
dhckh
t
dhcsl
t
cshdv