Serial Eeprom Interface Timing - Realtek RTL8169 Manual

11.3.2 Serial EEPROM Interface Timing

(93C46(64*16)/93C56(128*16))
EESK
EECS
EEDI
(Read)
(Read)
EEDO
High Impedance
EESK
EECS
EEDI
(Write)
(Write)
EEDO
High Impedance
EESK
EECS
EEDI
EEDO
(Read)
EEDO
(Program)
Symbol
tcs
twp
tsk
tskh
tskl
tcss
tcsh
tdis
tdih
tdos
tdoh
tsv
2002/03/27
1 1 0 An
1 0 1 An
tskh
tcss
tdis tdih
tsv
Parameter
Minimum CS Low Time
Write Cycle Time
SK Clock Cycle Time
SK High Time
SK Low Time
CS Setup Time
CS Hold Time
DI Setup Time
DI Hold Time
DO Setup Time
DO Hold Time
CS to Status Valid
EEPROM Access Timing Parameters
A2 A1 A0
... ...
A0 Dn
tsk
tskl
tdos
STATUS VALID
Min.
9346/9356 1000/250
9346/9356
9346/9356 4/1
9346/9356 1000/500
9346/9356 1000/250
9346/9356 200/50
9346/9356 0/0
9346/9356 400/50
9346/9356 400/100
9346/9356 2000/500
9346/9356
9346/9356
69
0 Dn D1
tcs
D0
BUSY
twp
tdoh
Typical Max.
10/10
2000/500
1000/500
RTL8169
tcs
D0
READY
tcsh
Unit
ns
ms
us
ns
ns
ns
ns
ns
ns
ns
ns
ns
Rev.1.21