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
1
1
0
An
A2
A0
A1
Dn
D1 D0
EESK
(Read)
(Write)
(Read)
(Write)
0
tcs
EESK
EECS
EEDI
EEDO
1
1
0
An
A0
...
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