DK-DEV-4SGX230N Altera, DK-DEV-4SGX230N Datasheet - Page 302

• 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

8–24
Figure 8–19. Receiver Datapath in DPA Mode
Notes to
(1) All disabled blocks and signals are grayed out.
(2) In SDR and DDR modes, the data width from the IOE is 1 and 2 bits, respectively.
(3) The rx_out port has a maximum data width of 10 bits.
Stratix IV Device Handbook Volume 1
rx_divfwdclk
rx_outclock
Fabric
FPGA
rx_out
Figure
8–19:
10
DPA Mode
Figure 8–19
in
best possible clock (DPA_diffioclk) from the eight fast clocks sent by the left and right
PLL. This serial DPA_diffioclk clock is used for writing the serial data into the
synchronizer. A serial LVDS_diffioclk clock is used for reading the serial data from
the synchronizer. The same LVDS_diffioclk clock is used in data realignment and
deserializer blocks.
IOE Supports SDR, DDR, or Non-Registered Datapath
“Receiver Hardware Blocks” on page 8–19
(LOAD_EN, diffioclk)
2
Deserializer
DOUT DIN
shows the DPA mode datapath, where all the hardware blocks mentioned
IOE
2
Left/Right PLL
(Note
3
DOUT DIN
Clock Mux
Bit Slip
(LVDS_LOAD_EN,
LVDS_diffioclk,
rx_outclk)
1), (2),
Chapter 8: High-Speed Differential I/O Interfaces and DPA in Stratix IV Devices
diffioclk
(3)
rx_inclock
are active. The DPA block chooses the
DOUT DIN
Synchronizer
8 Serial LVDS
Clock Phases
LVDS Receiver
3
(DPA_LOAD_EN,
DPA_diffioclk,
rx_divfwdclk)
February 2011 Altera Corporation
Retimed
Data
DPA Clock
DPA Circuitry
DIN
Differential Receiver
+
LVDS Clock Domain
DPA Clock Domain
rx_in