IP-CPRI Altera, IP-CPRI Datasheet - Page 112

• 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

6–10
Table 6–21. AUTO_RATE_CONFIG—Autorate Negotiation Register—Offset: 0x48
Table 6–22. CPRI_INTR_PEND—Interrupt Pending Status—Offset: 0x4C (Part 1 of 2)
CPRI MegaCore Function User Guide
RSRV
i_datarate_en
i_datarate_set
Note to
(1) This value is not valid for CPRI MegaCore variations that target a Cyclone IV GX device. This value is valid for CPRI MegaCore variations that
RSRV
los_lcv_pending
RSRV
target an Arria II GX device only if that device is an I3 speed grade device.
Table
Field
Field
6–21:
[31:5]
[4]
[3:0]
[31:6]
[5]
[4:2]
Bits
Bits
Access
UR0
RO
RW
UR0
RW
UR0
Access
Reserved.
Indicates that autorate negotiation is enabled. (Value is
1’b0 if autorate negotiation is not enabled; 1’b1 if
autorate negotiation is enabled, in the CPRI parameter
editor). Refer to
illustration of the autorate negotiation logic in the CPRI
IP core.
CPRI line rate to be used in next attempt to achieve
frame synchronization. You set the line rate in your
implementation of the autorate negotiation hardware
and software outside the CPRI IP core. Refer to
Appendix B, Implementing CPRI Link Autorate
Negotiation, for information about how to use the
autorate negotiation logic implemented in the CPRI IP
core.
Encode the CPRI line rate in this field with the following
values:
0001: 614.4 Mbps
0010: 1228.8 Mbps
0100: 2457.6 Mbps
0101: 3072.0 Mbps
1000: 4915.0 Mbps
1010: 6144.0 Mbps
Reserved.
Indicates an los_lcv interrupt is pending (the interrupt
occurred but is not yet serviced).
Reserved.
Figure B–1
Function
(1)
(1)
and
Function
Figure B–2
for an
Chapter 6: Software Interface
May 2011 Altera Corporation
CPRI Interface Registers
28’h0
As specified in
CPRI parameter
editor
4’h0
Default
Default
26’h0
1’h0
4’h0