ADSP-21469KBCZ-3 Analog Devices Inc, ADSP-21469KBCZ-3 Datasheet - Page 31

• Manufacturer Part Number: ADSP-21469KBCZ-3
• Description: 400MHz SHARC Processor W/5 Mbits Ram
• Manufacturer: Analog Devices Inc
• Series: SHARC®r
• Type: Floating Pointr

Specifications of ADSP-21469KBCZ-3

• Interface: DAI, DPI, EBI/EMI, I²C, SCI, SPI, SSP, UART/USART
• Clock Rate: 400MHz
• Non-volatile Memory: External
• On-chip Ram: 5Mb
• Voltage - I/o: 3.30V
• Voltage - Core: 1.05V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 324-BGA, 324-CSP
• Package: 324CSP-BGA
• Numeric And Arithmetic Format: Floating-Point
• Maximum Speed: 400 MHz
• Ram Size: 640 KB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DDR2 SDRAM Read Cycle Timing
Table 28. DDR2 SDRAM Read Cycle Timing, V
1
Parameter
Timing Requirements
t
t
t
t
t
t
Switching Characteristics
t
t
t
t
t
In order to ensure proper operation of the DDR2, all the DDR2 guidelines have to be strictly followed (see Engineer-to-Engineer Note EE-349).
AC
DQSCK
DQSQ
QH
RPRE
RPST
CK
CH
CL
AS
AH
DQ Output Access Time From CK/CK
DQS Output Access Time From CK/CK
DQS-DQ Skew for DQS and Associated DQ Signals
DQ, DQS Output Hold Time From DQS
Read Preamble
Read Postamble
Clock Cycle Time
Minimum Clock Pulse Width
Maximum Clock Pulse Width
Address Setup Time
Address Hold Time
DDR2_DQSn
DDR2_DATA
DDR2_ADDR
DDR2_CTL
DDR2_CLKx
t
CH
t
RPRE
Figure 18. DDR2 SDRAM Controller Input AC Timing
t
DD-DDR2
CK
t
AS
Rev. 0 | Page 31 of 72 | June 2010
t
DQSCK
t
CL
t
DQSQ
Nominal 1.8 V
t
QH
t
AH
Min
–1.0
–1.0
1.9
0.6
0.25
4.8
2.35
2.35
1.85
1.0
t
AC
t
DQSQ
200 MHz
Max
0.7
0.7
0.450
2.75
2.75
1
t
t
QH
RPST
Min
–1.0
–1.0
1.71
0.6
0.25
4.22
2.05
2.05
1.65
0.9
225 MHz
Max
0.7
0.7
0.450
2.45
2.45
1
ADSP-21469
Unit
ns
ns
ns
ns
t
t
ns
ns
ns
ns
ns
CK
CK