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| EP2AGX95EF29C6N Datasheet, PDF (217/380 Pages) Altera Corporation – Device Interfaces and Integration | |||
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Chapter 7: External Memory Interfaces in Arria II Devices
Memory Interfaces Pin Support for Arria II Devices
7â15
Figure 7â12 shows the number of DQ/DQS groups per bank in Arria II GZ
EP2AGZ225 devices in the 1152-pin FineLine BGA package.
Figure 7â12. Number of DQ/DQS Groups per Bank in EP2AGZ225 Devices in the 1152-Pin FineLine BGA
Package (Note 1), (2), (3), (4)
DLL0
I/O Bank 8A
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
40 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
DLL3
I/O Bank 1A
48 User I/Os
Ã4=7
Ã8/Ã9=3
Ã16/Ã18=1
EP2AGZ225 Devices
in the 1152-Pin FineLine BGA
I/O Bank 6A
48 User I/Os
Ã4=7
Ã8/Ã9=3
Ã16/Ã18=1
I/O Bank 1C
42 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
I/O Bank 6C
42 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
DLL1
I/O Bank 3A
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
40 User I/Os
Ã4=6
Ã8/Ã9=3
Ã16/Ã18=1
DLL2
Notes to Figure 7â12:
(1) EP2AGZ225 devices do not support the Ã32/Ã36 mode. To interface with a Ã36 QDR II+/QDR II SRAM device, refer to âCombining Ã16/Ã18
DQ/DQS Groups for Ã36 QDR II+/QDR II SRAM Interfaceâ on page 7â21.
(2) You can also use DQS/DQSn pins in some of the Ã4 groups as RUP and RDN pins, but you cannot use a Ã4 group for memory interfaces if two pins
of the Ã4 group are used as RUP and RDN pins for OCT calibration. If two pins of a Ã4 group are used as RUP and RDN pins for OCT calibration, you
can use the Ã16/Ã18 or Ã32/Ã36 groups that include that Ã4 group; however, there are restrictions on using Ã8/Ã9 groups that include that Ã4
group.
(3) All I/O pin counts include dedicated clock inputs that you can use for data inputs.
(4) You can also use some of the DQ/DQS pins in I/O Bank 1C as configuration pins. You cannot use a Ã4 DQ/DQS group with any of its pin members
used for configuration purposes. Ensure that the DQ/DQS groups that you have chosen are not also used for configuration because you may lose
up to four Ã4 DQ/DQS groups, depending on your configuration scheme.
June 2011 Altera Corporation
Arria II Device Handbook Volume 1: Device Interfaces and Integration
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