HC4GX15 Datasheet, PDF (659/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 1: DC and Switching Characteristics of HardCopy IV Devices
1–29
Switching Characteristics
Table 1–32. HardCopy IV Maximum Clock Rate Support for External Memory Interfaces with
Half-Rate Controller—Preliminary (Note 1) (Part 2 of 2)
Memory Standards
MHz
Top and Bottom I/O Banks
Left and Right I/O Banks
QDRII SRAM
300
300
RLDRAM II
400 (3)
400 (3)
Notes to Table 1–32:
(1) Pending silicon characterization.
(2) Pending IP support. Actual achievable performance is based on design and system-specific factors. For
533MHz DDR3 support, please contact Altera.
(3) Pending IP support. Actual achievable performance is based on design and system-specific factors. For
400MHz RLDRAM II support, please contact Altera.
Table 1–33. HardCopy IV Maximum Clock Rate Support for External Memory Interfaces with
Full-Rate Controller—Preliminary (Note 1)
Memory Standards
MHz
Top and Bottom I/O Banks Left and Right I/O Banks
DDR2 SDRAM
267
267
DDR SDRAM
200
200
Notes to Table 1–33:
(1) Pending silicon characterization.
External Memory I/O Timing Specifications
Table 1–34 and Table 1–35 list HardCopy IV device timing uncertainties on the read
and write data paths. Use these specifications to determine timing margins for source
synchronous paths between a HardCopy IV device and an external memory device.
Refer to “SW (sampling window)” in Table 1–39 on page 1–32.
Table 1–34. Sampling Window (SW) - Read Side—Preliminary (Note 1) (Part 1 of 2)
Location (2)
VIO
Memory Type
DDR3 (>400MHz) (3)
DDR3
DDR2
DDR1
QDRII/II+
RLDRAM II (>333MHz) (4)
Sampling Window (ps)
Setup
Hold
282
56
344
85
213
162
236
178
218
203
198
183
© June 2009 Altera Corporation
HardCopy IV Device Handbook Volume 4