IP-CPRI Altera, IP-CPRI Datasheet - Page 48
![no-image](/images/manufacturer_photos/0/0/40/altera_sml.jpg)
IP-CPRI
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
- Current page: 48 of 150
- Download datasheet (3Mb)
4–24
Figure 4–11. CPRI Basic Mapping Mode
CPRI MegaCore Function User Guide
1
Basic Frame
Control
Words
In the basic mapping mode, AxC containers are packed in the IQ data block in the
packed position (Option 1) illustrated in Section 4.2.7.2.3 of the CPRI V4.1
Specification.
data channels. The oversampling factor is the number of 32-bit data words in each
AxC container.
The CPRI IP core does not support AxC interface reordering. When the value of
map_ac is less than N_MAP, the first map_ac AxC interfaces, of the existing N_MAP
interfaces, are active. Note that an active AxC interface transmits and receives data on
its data channel based on the values of the relevant map_rx_enable bit of the
CPRI_IQ_RX_BUF_CONTROL register and the relevant map_tx_enable bit of the
CPRI_IQ_TX_BUF_CONTROL register. Any data in an AxC container for an active but
disabled channel is ignored, and an incoming AxC container designated from a
disabled channel is ignored.
The map_15bit_mode field of the CPRI_MAP_CONFIG register specifies the sample width.
The sample width is the number of significant bits —15 or 16—in each 16-bit half
(originally, I- or Q-sample) of the 32-bit data word on the Avalon-ST data channel. In
15-bit mode, the least significant bit in each half of the 32-bit word is ignored when
received from the data channel on input signal mapN_tx_data[31:0], and is set to 0
when transmitted on the data channel in output signal mapN_rx_data[31:0].
Therefore, bit 15 and bit 31 of the data word correspond to bit 14 of the I and Q
samples, respectively; bit 1 and bit 17 of the data word correspond to bit 0 of the I and
Q samples, respectively; and bits 0 and 16 of the data word are ignored. In 16-bit
mode, bit 15 and bit 31 of the data word correspond to bit 15 of the I and Q samples,
respectively, and bit 0 and bit 16 of the data word correspond to bit 0 of the I and Q
samples, respectively.
widths.
IQ Data Block
Container
AxC
1
Figure 4–11
Interface
Data
AxC
0
Container
Figure 4–12
AxC
2
shows how the AxC containers map to the individual active
...
Interface
Data
AxC
1
shows the bit correspondence for both sample
...
...
...
Container
map_ac
AxC
...
Interface
map_ac
Data
AxC
Reserved
Chapter 4: Functional Description
Bits
May 2011 Altera Corporation
...
CPRI MAP Interface Module
Related parts for IP-CPRI
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![IPTR-C2H-NIOS](/images/manufacturer_photos/0/0/40/altera_tmb.jpg)
Part Number:
Description:
IP CORE Renewal Of IPT-C2H-NIOS
Manufacturer:
Altera
Datasheet:
![IP-XAUIPCS](/images/manufacturer_photos/0/0/40/altera_tmb.jpg)
Part Number:
Description:
IP CORE - XAUI PHY
Manufacturer:
Altera
Datasheet:
![IP-RLDRAMII](/images/manufacturer_photos/0/0/40/altera_tmb.jpg)
Part Number:
Description:
IP CORE - RLDRAM II Controller
Manufacturer:
Altera
Datasheet:
![IP-SRAM/QDRII](/images/manufacturer_photos/0/0/40/altera_tmb.jpg)
Part Number:
Description:
IP CORE - QDRII SRAM Controller
Manufacturer:
Altera
Datasheet:
![IP-LINK](/images/no-image3.png)
Part Number:
Description:
MODULE, TX/RX, W/ PSU, IP-LINK
Manufacturer:
TOPCO SNT
Datasheet:
![I2C CONTROLLER IP CORE](/images/no-image3.png)
Part Number:
Description:
I2C Controller FPGA IP Core
Manufacturer:
SYSTEM LEVEL SOLUTIONS
![IP-10GETHERNET](/photos/24/19/241934/4696150_tmb.jpg)
Part Number:
Description:
IP CORE - 10 Gbps Ethernet MAC PCS PMA Reference Design
Manufacturer:
Altera
Datasheet:
![IP-NIOS](/images/manufacturer_photos/0/0/40/altera_tmb.jpg)
Part Number:
Description:
IP NIOS II MEGACORE
Manufacturer:
Altera
Datasheet: