ADSP-BF531 Analog Devices, ADSP-BF531 Datasheet - Page 25

• Manufacturer Part Number: ADSP-BF531
• Description: Blackfin Embedded Processor
• Manufacturer: Analog Devices

SDRAM Interface Timing
Table 18. SDRAM Interface Timing
1
2
Parameter
Timing Requirements
t
t
Switching Characteristics
t
t
t
t
t
t
t
For V
Command pins include: SRAS, SCAS, SWE, SDQM, SMS, SA10, SCKE.
SSDAT
HSDAT
SCLK
SCLKH
SCLKL
DCAD
HCAD
DSDAT
ENSDAT
DDINT
= 1.2 V.
DATA Setup Before CLKOUT
DATA Hold After CLKOUT
CLKOUT Period
CLKOUT Width High
CLKOUT Width Low
Command, ADDR, Data Delay After CLKOUT
Command, ADDR, Data Hold After CLKOUT
Data Disable After CLKOUT
Data Enable After CLKOUT
CLKOUT
DATA (IN)
DATA(OUT)
CMND ADDR
(OUT)
1
t
SSDAT
NOTE: COMMAND = SRAS, SCAS, SWE, SDQM, SMS, SA10, SCKE.
Rev. 0 | Page 25 of 56 | March 2004
Figure 13. SDRAM Interface Timing
t
DCAD
1
2
t
SCLK
t
t
ENSDAT
HSDAT
ADSP-BF531/ADSP-BF532/ADSP-BF533
t
t
DCAD
HCAD
t
SCLKL
t
t
D SDA T
SCLKH
Min
2.1
0.8
7.5
2.5
2.5
0.8
1.0
t
HCAD
Max
6.0
6.0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns