RTL8181 ETC, RTL8181 Datasheet - Page 20

• Manufacturer Part Number: RTL8181
• Description: Wireless LAN Access Point/Gateway Controller
• Manufacturer: ETC

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Note: The clock cycle is based memory clock.
The SDRAM timing:
The write access timing of flash memory:
F_CE0#
CONFIDENTIAL
12-10
9-5
4-0
A[20..0]
D[n..0]
WR#
OE#
CE23T_RP=T_RCD T_RP and T_RCD timing parameter
CE23T_RAS
CE23T_RFC
Tcs
Basic unit, 1*clock cycle
“0000” means 1 unit (1 clock cycle)
T_RAS timing parameter
Basic unit, 1*clock cycle
“0000” means 1 unit (1 clock cycle)
T_RFC timing parameter for refresh interval
Basic unit, 1*clock cycle
“0000” means 1 unit (1 clock cycle)
Twp
Twp
20
R/W
R/W
R/W
111
11111
11111
RTL8181
v1.0