HC4GX15 Datasheet, PDF (68/668 Pages) Altera Corporation – HardCopy IV Device Handbook

7–2
Chapter 7: External Memory Interfaces in HardCopy IV Devices
Table 7–1 and Table 7–2 list the maximum clock rate HardCopy IV devices can
support with external memory devices.
Table 7–1. HardCopy IV Maximum Clock Rate Support for External Memory Interfaces with Half-Rate Controller
(Note 1), (2)
Performance-Optimized
Flip Chip Package (F)
Cost-Optimized
Flip Chip Package (L)
Low-Cost
Wirebond Package (W)
Memory
Standards
Top and
Bottom
I/O Banks
(MHz)
Left and Right
I/O Banks
(MHz)
Top and
Bottom
I/O Banks
(MHz)
Left and Right
I/O Banks
(MHz)
Top and
Bottom
I/O Banks
(MHz)
Left and Right
I/O Banks
(MHz)
DDR3 SDRAM
533 (3)
533 (3)
400
400
—
—
DDR2 SDRAM
333
333
333
333
200
200
DDR SDRAM
200
200
200
200
150
150
QDRII+ SRAM
350
350
350
350
150
150
QDRII SRAM
300
300
300
300
150
150
RLDRAM II
400 (4)
400 (4)
333
333
150
150
Notes to Table 7–1:
(1) Pending silicon characterization.
(2) The maximum clock rate support for external memory interfaces applies to commercial grade devices.
(3) Pending IP support. Actual achievable performance is based on design and system-specific factors. For 533MHz DDR3 support, contact Altera.
(4) Pending IP support. Actual achievable performance is based on design and system-specific factors. For 400MHz RLDRAM II support, contact
Altera.
Table 7–2. HardCopy IV Maximum Clock Rate Support for External Memory Interfaces with Full-Rate Controller (Note 1), (2)
Performance-Optimized
Flip Chip Package (F)
Cost-Optimized
Flip Chip Package (L)
Low-Cost
Wirebond Package (W)
Memory
Standards
Top and
Bottom
I/O Banks
(MHz)
Left and Right
I/O Banks
(MHz)
Top and
Bottom
I/O Banks
(MHz)
Left and Right
I/O Banks
(MHz)
Top and
Bottom
I/O Banks
(MHz)
Left and Right
I/O Banks
(MHz)
DDR2 SDRAM (3)
267
267
233
233
200
200
DDR SDRAM
200
200
200
200
133
133
Notes to Table 7–2:
(1) Pending silicon characterization.
(2) The maximum clock rate support for external memory interfaces applies to commercial grade devices.
(3) Altera recommends using ALTMEMPHY AFI mode to achieve these quoted maximum clock rates due to the lower performance of non-AFI
mode.
HardCopy IV Device Handbook, Volume 1
© January 2010 Altera Corporation