LAN9500 Datasheet, PDF (197/213 Pages) SMSC Corporation – USB 2.0 to 10/100 Ethernet Controller Promiscuous mode

LAN950x
8.5.3 RESET AND CONFIGURATION STRAP TIMING
Figure 8-3 illustrates the nRESET pin timing requirements and its relation to the configuration strap pins and output
drive. Assertion of nRESET is not a requirement. However, if used, it must be asserted for the minimum period specified.
FIGURE 8-3:
NRESET RESET PIN TIMING
nRESET
Configuration
Strap Pins
Output Drive
t_rstia
t_css
t_csh
t_odad
TABLE 8-16: NRESET RESET PIN TIMING VALUES
Symbol
Description
MIN
TYP
MAX Units
t_rstia
nRESET input assertion time
1
uS
t_css
Configuration strap pins setup to nRESET deassertion
200
nS
t_csh
Configuration strap pins hold after nRESET deassertion
10
nS
t_odad
Output drive after deassertion
30
nS
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DS00001875A-page 197