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DDR Controller
AM3517/05
AM3517/05
SDRAM
Supported
mDDR/DDR2
• Supports mDDR / DDR2
•
DDR
controller has three
Supported
Measured
Throughput
810MB/sec
•
DDR
controller has three
functional blocks:
– Virtual Rotated Frame Buffer
(VRFB), supporting rotations of
0
, 90
, 180
,270
Supported
Size (bits)
16M, 32M (2
Banks)
64M, 128M, 256M,
0
, 90
, 180
,270
– SDRAM memory-access
scheduler (SMS)
•
Optimizes latency and
64M, 128M, 256M,
512M,1G,
2G (4 Banks)
Max Clock
Speed
166MHz
•
Optimizes latency and
bandwidth usage among
requestors
–
SDRAM Controller
Speed
Chip Selects
2
Data Width
16/32b
–
SDRAM Controller
• Physical interface to DDR2 or
mDDR
•
Two chip selects
13
Data Width
•
Two chip selects