EP3C55F780I7 Datasheet, PDF (148/274 Pages) Altera Corporation – This section provides a complete overview of all features relating to the Cyclone III device family

8–6
Chapter 8: External Memory Interfaces in the Cyclone III Device Family
Cyclone III Device Family Memory Interfaces Pin Support
Table 8–1. Cyclone III Device DQS and DQ Bus Mode Support for Each Side of the Device (Part 4 of 4)
Device
EP3C55
EP3C80
EP3C120
Package
Side
484-pin FineLine
BGA/484-pin Ultra
FineLine BGA
780-pin FineLine BGA
484-pin FineLine
BGA/484-pin
Ultra FineLine
BGA
780-pin FineLine BGA
484-pin FineLine BGA
780-pin FineLine BGA
Left
Right
Top
Bottom
Left
Right
Top
Bottom
Left
Right
Top
Bottom
Left
Right
Top
Bottom
Left
Right
Top
Bottom
Left
Right
Top
Bottom
Number
×8
Groups
4
4
4
4
4
4
6
6
4
4
4
4
4
4
6
6
4
4
4
4
4
4
6
6
Number
×9
Groups
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Number
×16
Groups
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Number
×18
Groups
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Number
×32
Groups
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Number
×36
Groups
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Notes to Table 8–1:
(1) This device package does not support ×32 or ×36 mode.
(2) For the top side of the device, RUP, RDN, PLLCLKOUT3n, and PLLCLKOUT3p pins are shared with the DQ or DM pins to gain ×8 DQ group. You
cannot use these groups if you are using the RUP and RDN pins for on-chip termination (OCT) calibration or if you are using PLLCLKOUT3n
and PLLCLKOUT3p.
(3) There is no DM pin support for these groups.
(4) The RUP and RDN pins are shared with the DQ pins. You cannot use these groups if you are using the RUP and RDN pins for OCT calibration.
(5) The ×8 DQ group can be formed in Bank 2.
(6) The ×8 DQ group can be formed in Bank 5.
(7) There is no DM and BWS# pins support for these groups.
(8) The RUP pin is shared with the DQ pin to gain ×9 or ×18 DQ group. You cannot use these groups if you are using the RUP and RDN pins for
OCT calibration.
Cyclone III Device Handbook
Volume 1
July 2012 Altera Corporation