HC4GX15 Datasheet, PDF (85/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 7: External Memory Interfaces in HardCopy IV Devices
7–19
Memory Interfaces Pin Support
The numbering scheme starts from the top left side of the device going
counter-clockwise. Figure 7–12 and Figure 7–13 show how the DQS/DQ groups are
numbered in a package-bottom view of the device. The top and bottom sides of the
HardCopy IV E device can contain up to 38 ×4 DQS/DQ groups; the left and right
sides of the device can contain up to 26 ×4 DQS/DQ groups.The top and bottom sides
of the HardCopy IV GX device can contain up to 26 ×4 DQS/DQ groups; the left and
right sides of the device can contain up to 26 ×4 DQS/DQ groups.
The parity, DM, BWSn, ECC, and QVLD pins are shown as DQ pins in the pin table.
When not used as memory interface pins, these pins are available as regular I/O pins.
Figure 7–12. DQS Pins in HardCopy IV E I/O Banks
DQS38T
DQS20T
DQS19T
DQS1T
DLL1
PLL_T1 PLL_T2
DLL4
PLL_L1
8A
8B
8C
7C
7B
7A
PLL_R1
DQS1L
DQS26R
1A
6A
1C
DQS13L
PLL_L2
PLL_L3
DQS14L
2C
6C
DQS14R
PLL_R2
PLL_R3
DQS13R
5C
2A
5A
DQS26L
DQS1R
PLL_L4
3A
3B
3C
4C
4B
4A
PLL_R4
PLL_B1 PLL_B2
DLL2
DLL3
DQS1B
DQS19B
DQS20B
DQS38B
© January 2010 Altera Corporation
HardCopy IV Device Handbook, Volume 1