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| HC4GX15 Datasheet, PDF (82/668 Pages) Altera Corporation – HardCopy IV Device Handbook | |||
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7â16
Chapter 7: External Memory Interfaces in HardCopy IV Devices
Memory Interfaces Pin Support
Figure 7â9. Number of DQS/DQ Groups per Bank in HC4GX25L Devices in a 780-pin FineLine BGA Package (Note 1), (2)
DLL1
I/O Bank 8A
(2)
40 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
I/O Bank 8B
24 User I/Os
Ã4=4
Ã8/Ã9=2
Ã16/Ã18=1
I/O Bank 8C
32 User I/Os
Ã4=3
Ã8/Ã9=1
Ã16/Ã18=0
I/O Bank 7C
32 User I/Os
Ã4=3
Ã8/Ã9=1
Ã16/Ã18=0
I/O Bank 7B
24 User I/Os
Ã4=4
Ã8/Ã9=2
Ã16/Ã18=1
I/O Bank 7A
(2)
40 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
DLL4
I/O Bank 1C
13 User I/Os
Ã4=0
Ã8/Ã9=0
Ã16/Ã18=0
780-pin FineLine BGA
DLL2
I/O Bank 3A
(2)
40 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
I/O Bank 3B
24 User I/Os
Ã4=4
Ã8/Ã9=2
Ã16/Ã18=1
I/O Bank 3C
32 User I/Os
Ã4=3
Ã8/Ã9=1
Ã16/Ã18=0
I/O Bank 4C
32 User I/Os
Ã4=3
Ã8/Ã9=1
Ã16/Ã18=0
I/O Bank 4B
24 User I/Os
Ã4=4
Ã8/Ã9=2
Ã16/Ã18=1
I/O Bank 4A
(2)
40 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
DLL3
Notes to Figure 7â9:
(1) These devices do not support Ã32/Ã36 mode.
(2) You can use the DQS/DQSn pins in some of the Ã4 groups as RUP/RDN pins. You cannot use a Ã4 group for memory interfaces if two pins in the
group are used as RUP and RDN pins for OCT calibration. You can still use the Ã16/Ã18 groups, including the Ã4 groups. However, there are
restrictions on using Ã8/Ã9 groups that include these Ã4 groups.
HardCopy IV Device Handbook, Volume 1
© January 2010 Altera Corporation
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