Altera Cyclone IV Device Handbook page 153

Chapter 7: External Memory Interfaces in Cyclone IV Devices
Cyclone IV Devices Memory Interfaces Pin Support
Table 7–2. Cyclone IV E Device DQS and DQ Bus Mode Support for Each Side of the Device (Part 3 of 3)
Device Package
484-pin UBGA
EP4CE40
EP4CE55 484-pin FBGA
EP4CE75
780-pin FBGA
Notes to Table 7–2:
(1) Some of the DQ pins can be used as RUP and RDN pins. You cannot use these groups if you are using these pins as RUP and RDN pins for
OCT calibration.
(2) Some of the DQ pins can be used as RUP pins while the DM pins can be used as RDN pins. You cannot use these groups if you are using the
RUP and RDN pins for OCT calibration.
(3) There is no DM pin support for these groups.
(4) 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
PLLCLKOUT3n and PLLCLKOUT3p.
f
For more information about device package outline, refer to the
Specifications
DQS pins are listed in the Cyclone IV pin tables as DQSXY, in which X indicates the DQS
grouping number and Y indicates whether the group is located on the top (T), bottom
(B), or right (R) side of the device. Similarly, the corresponding DQ pins are marked as
DQXY, in which the X denotes the DQ grouping number and Y denotes whether the
group is located on the top (T), bottom (B), or right (R) side of the device. For example,
DQS2T indicates a DQS pin belonging to group 2, located on the top side of the device.
Similarly, the DQ pins belonging to that group is shown as DQ2T.
1
Each DQ group is associated with its corresponding DQS pins, as defined in the Cyclone
IV pin tables. For example:
■
■
The Quartus
with its associated DQS.
March 2016 Altera Corporation
Number
Side ×8
Groups
Left 4
Right 4
Bottom 4
Top 4
Left 4
Right 4
Bottom 4
Top 4
Left 4
Right 4
Bottom 6
Top 6
webpage.
For DDR2 or DDR SDRAM, ×8 DQ group DQ3B[7..0] pins are associated with
the DQS3B pin (same 3B group index)
For QDR II SRAM, ×9 Q read-data group DQ3T[8..0] pins are associated with
DQS0T/CQ0T and DQS1T/CQ0T# pins (same 0T group index)
®
II software issues an error message if a DQ group is not placed properly
Number Number Number
×9 ×16 ×18
Groups Groups Groups
4 2 2
4 2 2
4 2 2
4 2 2
4 2 2
4 2 2
4 2 2
4 2 2
4 2 2
4 2 2
6 2 2
6 2 2
7–7
Number Number
×32 ×36
Groups 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
Device Packaging
Cyclone IV Device Handbook,
Volume 1