LAN9221i SMSC [SMSC Corporation], LAN9221i Datasheet - Page 138

• Manufacturer Part Number: LAN9221i
• Description: High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
• Manufacturer: SMSC [SMSC Corporation]

Revision 2.6 (12-04-08)
6.10
SYMBOL
t
t
t
t
CSHCKH
t
t
t
t
t
t
CKLCSL
CKHDIS
DHCKH
CKLDIS
CKCYC
DVCKH
DSCKH
CSHDV
DHCSL
t
t
t
CKH
CKL
CSL
The following specifies the EEPROM timing requirements for the LAN9221/LAN9221i:
EEPROM Timing
EECLK Cycle time
EECLK High time
EECLK Low time
EECS high before rising edge of EECLK
EECLK falling edge to EECS low
EEDIO valid before rising edge of EECLK
(OUTPUT)
EEDIO disable after rising edge EECLK
(OUTPUT)
EEDIO setup to rising edge of EECLK (INPUT)
EEDIO hold after rising edge of EECLK
(INPUT)
EECLK low to data disable (OUTPUT)
EEDIO valid after EECS high (VERIFY)
EEDIO hold after EECS low (VERIFY)
EECS low
DESCRIPTION
Table 6.10 EEPROM Timing Values
Figure 6.8 EEPROM Timing
DATASHEET
138
High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
1070
1070
1110
MIN
550
550
550
550
580
30
90
0
0
TYP
SMSC LAN9221/LAN9221i
MAX
1130
570
570
600
Datasheet
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns