IP-CPRI Altera, IP-CPRI Datasheet - Page 101

• 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

Chapter 6: Software Interface
CPRI Interface Registers
Table 6–9. CPRI_TX_CTRL—CPRI Transmit Control Word—Offset: 0x14
Table 6–10. CPRI_LCV—CPRI Line Code Violation Counter—Offset: 0x18
Table 6–11. CPRI_BFN—CPRI Recovered Radio Frame Counter—Offset: 0x1C
Table 6–12. CPRI_HW_RESET—Hardware Reset From Control Word—Offset: 0x20 (Part 1 of 2)
December 2010 Altera Corporation
RSRV
tx_control_insert
tx_control_data
RSRV
cpri_lcv
RSRV
bfn
RSRV
reset_gen_done_hold
reset_gen_done
reset_detect_hold
reset_detect
Field
Field
Field
Field
[31:9]
[8]
[7:0]
[31:8]
[7:0]
[31:12] UR0
[11:0]
Bits
Bits
Bits
[31:8] UR0
[7]
[6]
[5]
[4]
Bits
UR0
RW
RW
UR0
RO
RO
Access
Access
Access
RC
RO
RC
RO
Access
(1)
Reserved.
Control byte transmit enable.
CPRI control byte to be transmitted in CPRI hyperframe
position Z.x.0, where x is the index in the cpri_ctrl_index
field of the CPRI_CTRL_INDEX register.
Reserved.
Number of line code violations (LCVs) detected in the 8B/10B
decoding block in the transceiver. Enables CPRI link
debugging. This register saturates at the value 255; after it
reaches 255, it maintains this value until reset.
This counter is not used to determine whether the N_LCV
threshold
includes LCVs that occur during initialization—before T_LCV
(Table 6–24 on page
saturates.
Reserved.
Current BFN (node B radio frame number) number. Value
obtained from BFN alignment state machine.
Reserved.
Hold reset_done.
Indicates that a reset request or acknowledgement has been
successfully sent on the CPRI link by the CPRI transmitter.
Hold reset_detect.
Indicates that reset request has been detected in the incoming
stream on the CPRI link by the CPRI receiver.
(Table 6–23 on page
6–11) is reached—and because it
Function
Function
Function
Function
6–11) is reached, because it
CPRI MegaCore Function User Guide
23'h0
1’h0
8'h0
24'h0
8’h0
20'h0
12’h0
Default
Default
Default
24'h0
1’h0
1'h0
1'h0
1'h0
Default
6–5