DK-DEV-4SGX230N Altera, DK-DEV-4SGX230N Datasheet - Page 53

• Manufacturer Part Number: DK-DEV-4SGX230N
• Description: KIT DEVELOPMENT STRATIX IV
• Manufacturer: Altera
• Series: Stratix® IVr
• Type: FPGAr

Specifications of DK-DEV-4SGX230N

• Contents: Development Board, Universal Power Supply, Cables and Software
• Silicon Manufacturer: Altera
• Core Architecture: FPGA
• Core Sub-architecture: Stratix
• Silicon Core Number: EP4S
• Silicon Family Name: Stratix IV GX
• Rohs Compliant: Yes
• For Use With/related Products: EP4SGX230K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 544-2594

Chapter 2: Logic Array Blocks and Adaptive Logic Modules in Stratix IV Devices
Adaptive Logic Modules
Figure 2–14. Register Chain within the LAB
Note to
(1) You can use the combinational or adder logic to implement an unrelated, un-registered function.
February 2011 Altera Corporation
Figure
Register Chain
2–14:
In addition to general routing outputs, ALMs in the LAB have register-chain outputs.
Register-chain routing allows registers in the same LAB to be cascaded together. The
register-chain interconnect allows the LAB to use LUTs for a single combinational
function and the registers to be used for an unrelated shift-register implementation.
These resources speed up connections between ALMs while saving local interconnect
resources (refer to
advantage of these resources to improve utilization and performance.
For more information about the register chain interconnect, refer to
Interconnects” on page
Combinational
Combinational
Logic
Logic
Figure
(Note 1)
adder0
adder1
adder0
adder1
2–18.
2–14). The Quartus II Compiler automatically takes
reg_chain_out
reg_chain_in
labclk
D
D
D
D
reg0
reg1
reg0
reg1
From previous ALM
within the LAB
To next ALM
within the LAB
Q
Q
Q
Q
To general or
To general or
To general or
To general or
To general or
To general or
To general or
To general or
Stratix IV Device Handbook Volume 1
local routing
local routing
local routing
local routing
local routing
local routing
local routing
local routing
“ALM
2–17