2–42
Chapter 2: Board Components
Memory
Cyclone IV GX FPGA Development Board
August 2015
Altera Corporation
Reference Manual
DDR2 SDRAM Bottom Port
The DDR2 SDRAM bottom port consists of two DDR2 devices (U17 and U19).
Table 2–38
lists the DDR2 bottom port pin assignments, signal names, and its
functions. The signal names and types are relative to the Cyclone IV GX device in
terms of I/O setting and direction.
Table 2–38. DDR2 SDRAM Bottom Port Pin Assignments, Signal Names and Functions (Part 1 of 2)
Board Reference
Description
Schematic Signal
Name
I/O Standard
Cyclone IV GX
Device
Pin Number
U17.R2, U19.R2
Address bus
DDR2B_A12
1.8-V SSTL Class I
AB11
U17.P7, U19.P7
Address bus
DDR2B_A11
AE15
U17.M2, U19.M2
Address bus
DDR2B_A10
AH8
U17.P3, U19.P3
Address bus
DDR2B_A9
AG7
U17.P8, U19.P8
Address bus
DDR2B_A8
AA16
U17.P2, U19.P2
Address bus
DDR2B_A7
AG8
U17.N7, U19.N7
Address bus
DDR2B_A6
AH14
U17.N3, U19.N3
Address bus
DDR2B_A5
AK7
U17.N8, U19.N8
Address bus
DDR2B_A4
AG15
U17.N2, U19.N2
Address bus
DDR2B_A3
AH7
U17.M7, U19.M7
Address bus
DDR2B_A2
AB14
U17.M3, U19.M3
Address bus
DDR2B_A1
AK9
U17.M8, U19.M8
Address bus
DDR2B_A0
AG14
U17.L3, U19.L3
Bank address bus
DDR2B_BA1
AJ9
U17.L2, U19.L2
Bank address bus
DDR2B_BA0
AA12
U17.K7, U19.K7
Row address select
DDR2B_RASn
AG12
U17.L7, U19.L7
Column address select
DDR2B_CASn
AK10
U17.L8, U19.L8
Chip select
DDR2B_CSn
AK12
U17.K3, U19.K3
Write enable
DDR2B_WEn
AH10
U17.K9, U19.K9
Termination enable
DDR2B_ODT
AF13
U17.K2, U19.K2
Clock enable
DDR2B_CKE
AA13
U17.J8, U19.J8
Clock P
DDR2B_CLK_P
AF4
U17.K8, U19.K8
Clock N
DDR2B_CLK_N
AG4
U19.G8,
Data bus byte lane 0
DDR2B_DQ0
AG5
U19.G2
Data bus byte lane 0
DDR2B_DQ1
AJ3
U19.H7
Data bus byte lane 0
DDR2B_DQ2
AK4
U19.H3
Data bus byte lane 0
DDR2B_DQ3
AJ4
U19.H1
Data bus byte lane 0
DDR2B_DQ4
AH2
U19.H9
Data bus byte lane 0
DDR2B_DQ5
AH6
U19.F1
Data bus byte lane 0
DDR2B_DQ6
AF3
U19.F9
Data bus byte lane 0
DDR2B_DQ7
AK5
U19.F3
Write mask byte lane 0
DDR2B_DM0
AE3
U19.F7
Data strobe byte lane 0
DDR2B_DQS0
AD9