Synchronous sram, Synchronous sram –42 – Altera Arria V GX Starter Board User Manual
Page 50
2–42
Chapter 2: Board Components
Memory
Arria V GX Starter Board
November 2013
Altera Corporation
Reference Manual
lists the DDR3 component reference and manufacturing information.
Synchronous SRAM
The starter board supports a 18-Mb standard synchronous SRAM intended to be used
by NIOS II systems for instruction and data storage with low-latency random access
capability. The device has a 512K x 36-bits interface (32-bits data and 4-bits parity).
This device is part of the shared FSM bus that connects to the flash memory, SRAM,
and MAX V CPLD 5M2210 System Controller.
The device speed is 200 MHz single-data-rate. There is no minimum speed for this
device. The theoretical bandwidth of this 32-bit interface is 6.4 Gbps for continuous
bursts. The read latency for any address is two clocks while the write latency is one
clock.
H8
DDR3_DQ21
G21
1.5-V SSTL Class I
Data bus byte lane 2
G2
DDR3_DQ22
A23
1.5-V SSTL Class I
Data bus byte lane 2
H7
DDR3_DQ23
B23
1.5-V SSTL Class I
Data bus byte lane 2
D7
DDR3_DQ24
K20
1.5-V SSTL Class I
Data bus byte lane 3
C3
DDR3_DQ25
L20
1.5-V SSTL Class I
Data bus byte lane 3
C8
DDR3_DQ26
M20
1.5-V SSTL Class I
Data bus byte lane 3
C2
DDR3_DQ27
A22
1.5-V SSTL Class I
Data bus byte lane 3
A7
DDR3_DQ28
B21
1.5-V SSTL Class I
Data bus byte lane 3
A2
DDR3_DQ29
B20
1.5-V SSTL Class I
Data bus byte lane 3
B8
DDR3_DQ30
F20
1.5-V SSTL Class I
Data bus byte lane 3
A3
DDR3_DQ31
G20
1.5-V SSTL Class I
Data bus byte lane 3
F3
DDR3_DQS_P2
F22
Differential 1.5-V SSTL
Class I
Data strobe P byte lane 2
G3
DDR3_DQS_N2
G22
Differential 1.5-V SSTL
Class I
Data strobe N byte lane 2
C7
DDR3_DQS_P3
D20
Differential 1.5-V SSTL
Class I
Data strobe P byte lane 3
B7
DDR3_DQS_N3
E20
Differential 1.5-V SSTL
Class I
Data strobe N byte lane 3
K1
DDR3_ODT
H27
1.5-V SSTL Class I
On-die termination enable
J3
DDR3_RASN
B30
1.5-V SSTL Class I
Row address select
T2
DDR3_RESETN
K25
1.5-V SSTL Class I
Reset
L3
DDR3_WEN
F29
1.5-V SSTL Class I
Write enable
L8
DDR3_ZQ2
—
1.5-V SSTL Class I
ZQ impedance calibration
Table 2–43. DDR3 Device Pin Assignments, Schematic Signal Names, and Functions (Part 4 of 4)
Board Reference
Schematic
Signal Name
Arria V GX
Pin Number
I/O Standard
Description
Table 2–44. DDR3 Component Reference and Manufacturing Information
Board
Reference
Description
Manufacturer
Manufacturing
Part Number
Manufacturer
Website
U10, U11
8M×16×8, 1 Gb, DDR3 memory
Micron
MT41J64M16JT-15E