ADSP-21367 Analog Devices, ADSP-21367 Datasheet - Page 25

• Manufacturer Part Number: ADSP-21367
• Description: SHARC Processor
• Manufacturer: Analog Devices

Preliminary Technical Data
SDRAM Interface Timing
Table 18. SDRAM Interface Timing
1
2
Parameter
Timing Requirement
t
t
Switching Characteristic
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
= 1.3 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
DATA (IN)
DATA(OUT)
CMND ADDR
SDCLK
(OUT)
1
t
SSDAT
NOTE: COMMAND = SRAS, SCAS, SWE, SDQM, SMS, SA10, SCKE.
Rev. PrA | Page 25 of 48 | November 2004
Figure 15. SDRAM Interface Timing
t
DCAD
1
2
t
SCLK
t
t
ENSDAT
HSDAT
t
t
DCAD
HCAD
t
SCLKL
t
t
D SDA T
SCLKH
Minimum
TBD
TBD
TBD
TBD
TBD
TBD
TBD
t
HCAD
ADSP-21367
Maximum
TBD
TBD
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns