MFC2000 datasheet(417/426 Pages) ETC

417 / 426 page

Hardware Description

MFC 2000 Multifunctional Peripheral Controller 2000

100723A

Conexant

24-31

Table 24-10. Timing Parameters for 16-bit SDRAM Read and Write

Parameter

Symbol

Min.

Max.

Units

Clock Period

CLK

Ras precharge time

3 (5 for single access)

CLK

Mode register set to Active delay

RSC

CLK

Ras cycle time

CLK

Ras-to-cas delay

RCD

CLK

Data-in to Pre command period

DPL

2 (4 for single access)

CLK

Table 24-11. Timing Parameters for 8-bit SDRAM Read and Write

Parameter

Symbol

Min.

Max.

Units

Clock Period

CLK

Ras precharge time

5 (5 for single access)

CLK

Mode register set to Active delay

RSC

CLK

Ras cycle time

CLK

Ras-to-cas delay

RCD

CLK

Data-in to Pre command period

DPL

3 (3 for single access)

CLK

ROW

COL1

COL2

COL3

COL4

sdcasn

sdrasn

sdwrn

(write cycle)

sdaddr[12:0]

sddata[15:0]

(write cycle)

Trcd

Trah

Tras

Trp

Trc

Tcas

Tcah

Tcp

Tpc

Tds

Tdh

Tasr

Tasc

Figure 24-6. FPDRAM Timing (Read or Write)

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