IP-CPRI Altera, IP-CPRI Datasheet - Page 34

• Manufacturer Part Number: IP-CPRI
• Description: IP CORE - Common Public Radio Interface (CPRI)
• Manufacturer: Altera

Specifications of IP-CPRI

• Software Application: IP CORE, Interface And Protocols, HIGH SPEED
• Supported Families: Arria II GX, Cyclone IV GX, HardCopy IV, Stratix IV
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na

4–10
Figure 4–5. CPRI MegaCore Function Master Clocking in Arria II GZ and Stratix IV GX Devices
CPRI MegaCore Function User Guide
gxb_txdataout
gxb_rxdatain
gxb_refclk
pll_inclk
Figure 4–5
REC or as an RE master with CPRI line rate greater than 0.6144 Gbps in an Arria II GZ
or Stratix IV GX device.
ALTGX
CDR
shows the clock diagram for a CPRI MegaCore function configured as an
rx_clkout
tx_clkout
data
gxb_pll_inclk
32
cpri_clkout
32
clk_ex_delay
Sync Buffer
CPRI RX
Rx Elastic
CPRI TX
clk
clk
cpri_tx_aux_data
32
32
cpri_rx_aux_data
32
32
Ethernet MAC
data
HDLC
CPRI MegaCore Function
clk
clk
data
CPRI Tx
Interface
CPRI Rx
Interface
FIFO
FIFO
MAP
MAP
December 2010 Altera Corporation
Chapter 4: Functional Description
clk
MII Interface
Interface
CPU
Clocking and Reset Structure
mapXX_tx_data
mapXX_tx_clk
mapXX_rx_clk
mapXX_rx_data
cpri_mii_txclk
cpri_mii_rxclk
cpu_clk
cpu_writedata
cpu_readdata