HC4GX15 Datasheet, PDF (76/668 Pages) Altera Corporation – HardCopy IV Device Handbook

7–10
Chapter 7: External Memory Interfaces in HardCopy IV Devices
Memory Interfaces Pin Support
Table 7–6 lists the maximum number of DQS/DQ groups per side of the
HardCopy IV GX device.
Table 7–6. Number of DQS/DQ Groups in HardCopy IV GX Devices per Side
Device
Package
Side
×4 (2)
×8/×9 ×16/×18 ×32/×36
Left (1)
14
6
2
0
HC4GX15LA
780-pin
FineLine BGA
Bottom
Right
17
0
8
0
2
0
0
0
Top
17
8
2
0
Left
0
0
0
0
HC4GX15L
780-pin
FineLine BGA
Bottom
Right
17
0
8
0
2
0
0
0
Top
17
8
2
0
Left
0
0
0
0
HC4GX25L
780-pin
FineLine BGA
Bottom
Right
18
0
8
0
2
0
0
0
Top
18
8
2
0
Left
13
6
2
0
HC4GX25L
1152-pin
Bottom
26
12
4
0
HC4GX25F
FineLine BGA
Right
13
6
2
0
Top
26
12
4
0
Left
13
6
2
0
HC4GX35F
1152-pin
FineLine BGA
Bottom
Right
26
13
12
6
4
2
0
0
Top
26
12
4
0
Left
26
12
4
0
HC4GX35F
1517-pin
FineLine BGA
Bottom
Right
26
26
12
12
4
4
0
0
Top
26
12
4
0
Notes to Table 7–6:
(1) There are no DQS/DQ groups in the left side of the HC4GX25LF780 devices.
(2) In some ×4 groups, you can use the DQS/DQ pins as RUP/RDN pins. You cannot use these ×4 groups if the pins are
used as RUP and RDN pins for OCT calibration. Ensure that the DQS/DQ groups that you chose are not also used for
OCT calibration.
HardCopy IV Device Handbook, Volume 1
© January 2010 Altera Corporation