Realtek RTL8169 - Serial EEPROM Interface Timing

RTL8169
2002/03/27 Rev.1.21
69
11.3.2 Serial EEPROM Interface Timing
(93C46(64*16)/93C56(128*16))
EESK
EECS
EEDI
EEDO
110An A2 A0A1
Dn D1 D0
EESK
(Read)
(Write)
(Read)
(Write)
0
tcs
EESK
EECS
EEDI
EEDO
110AnA0
...
Dn
tcs
...
D0
BUSY READY
High Impedance
High Impedance
twp
EECS
EEDI
EEDO
EEDO
(Read)
(Program)
STATUS VALID
tsk
tskh
tskl
tcss
tdis tdih
tdos tdoh
tcsh
tsv
Symbol Parameter Min. Typical Max. Unit
tcs Minimum CS Low Time 9346/9356 1000/250 ns
twp Write Cycle Time 9346/9356 10/10 ms
tsk SK Clock Cycle Time 9346/9356 4/1 us
tskh SK High Time 9346/9356 1000/500 ns
tskl SK Low Time 9346/9356 1000/250 ns
tcss CS Setup Time 9346/9356 200/50 ns
tcsh CS Hold Time 9346/9356 0/0 ns
tdis DI Setup Time 9346/9356 400/50 ns
tdih DI Hold Time 9346/9356 400/100 ns
tdos DO Setup Time 9346/9356 2000/500 ns
tdoh DO Hold Time 9346/9356 2000/500 ns
tsv CS to Status Valid 9346/9356 1000/500 ns
EEPROM Access Timing Parameters