DK-DEV-4SGX230N Altera, DK-DEV-4SGX230N Datasheet - Page 682

• 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

2–10
Stratix IV Device Handbook Volume 2: Transceivers
Dedicated Left and Right PLL Cascade Network
Stratix IV devices have a dedicated PLL cascade network on the left and right side of
the device that connects to the input reference clock selection multiplexer of the
CMU PLLs, 6G ATX PLLs, and receiver CDRs on the left and right side of the device,
respectively.
The dedicated PLL cascade networks are segmented by bidirectional tri-state buffers
located along the clock line. Segmentation of the dedicated PLL cascade network
allows two or more left and right PLLs to drive the cascade clock line simultaneously.
Because the number of left and right PLLs and transceiver blocks vary from device to
device, the capability of cascading a left and right PLL to the CMU PLLs, 6G ATX
PLLs, and receiver CDRs also varies from device to device.
The following sections describe the Stratix IV GX and GT FPGA fabric-Transceiver
PLLs cascading for the various device packages.
Chapter 2: Transceiver Clocking in Stratix IV Devices
FPGA Fabric PLLs-Transceiver PLLs Cascading
February 2011 Altera Corporation