Smsc LAN9512 User Manual download pdf (Page 43)

USB Hub with Integrated 10/100 Ethernet Controller

Datasheet

SMSC LAN9512 43 Revision 1.0 (04-20-09)

DATASHEET

4.5.3 EEPROM Timing

The following specifies the EEPROM timing requirements for LAN9512:

Figure 4.1 EEPROM Timing

Table 4.5 EEPROM Timing Values

SYMBOL DESCRIPTION MIN TYP MAX UNITS

ckcyc

EECLK Cycle time 1110 1130 ns

ckh

EECLK High time 550 570 ns

ckl

EECLK Low time 550 570 ns

cshckh

EECS high before rising edge of EECLK 1070 ns

cklcsl

EECLK falling edge to EECS low 30 ns

dvckh

EEDO valid before rising edge of EECLK 550 ns

ckhdis

EEDO disable after rising edge EECLK 550 ns

dsckh

EEDI setup to rising edge of EECLK 90 ns

dhckh

EEDI hold after rising edge of EECLK 0 ns

ckldis

EECLK low to data disable (OUTPUT) 580 ns

cshdv

EEDIO valid after EECS high (VERIFY) 600 ns

dhcsl

EEDIO hold after EECS low (VERIFY) 0 ns

csl

EECS low 1070 ns

EECLK

EEDO

EEDI

EECS

ckldis

cshckh

EEDI (VERIFY)

ckh

ckl

ckcyc

cklcsl

csl

dvckh

ckhdis

dsckh

dhckh

dhcsl

cshdv

1 2 ... 38 39 40 41 42 43 44 45 46

Comments to this Manuals

No comments

Smsc LAN9512 User Manual Page 43

Comments to this Manuals

Related products and manuals for Computer Accessories Smsc LAN9512