IP-CPRI Altera, IP-CPRI Datasheet - Page 91

• 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 5: Signals
Auxiliary Interface Signals
Table 5–12. AUX Receiver Interface Signals
December 2010 Altera Corporation
aux_rx_status_data
[75:0]
Signal
AUX Receiver Signals
Table 5–12
Output
Direction
lists the signals on the AUX receiver interface.
[75]
[74]
[73]
[72:61]
[60:53]
[52:45]
[44:39]
[38:33]
[32]
[31:0]
Bit
cpri_rx_rfp: Synchronization pulse for start of 10 ms radio frame. The
pulse occurs at the start of the radio frame on the CPRI receiver interface.
cpri_rx_start: Indicates the start of the first basic frame on the AUX
interface, and can be used by an AxC software application to trigger the
AxC-specific resynchronization signal used in MAP synchronous buffer
mode. The cpri_rx_start signal is asserted at the offset defined in the
CPRI_START_OFFSET_RX register. The count to the offset starts at the
cpri_rx_rfp or cpri_rx_hfp pulse, depending on values set in the
register. Refer to
duration of the basic frame.
cpri_rx_hfp: Synchronization pulse for start of hyperframe. The pulse
occurs at the start of the hyperframe on the CPRI receiver interface.
cpri_rx_bfn: Current radio frame number.
cpri_rx_hfn: Current hyperframe number. Value is in the range 0–149.
cpri_rx_x: Index number of the current basic frame in the current
hyperframe. Value is in the range 0–255.
cpri_rx_k: Sample counting K counter. Counts the basic frame position of
the AxC Container Block for mapping IQ samples when map_mode field in
the CPRI_MAP_CONFIG register has value 01 or 10. This signal is not used
when map_mode value is 00.
cpri_rx_seq: Index number of the current 32-bit word in the current
basic frame being transmitted on the AUX link.
Depending on the CPRI line rate, this signal has the following range:
■
■
■
■
■
cpri_rx_sync_state: When set, indicates that Rx, HFN, and BFN
synchronization have been achieved in CPRI receiver frame
synchronization.
cpri_rx_aux_data: Data transmitted on the AUX link. Data is transmitted
in 32-bit words. Byte [31:24] is transmitted first, and byte [7:0] is
transmitted last.
1228.8 Mbps line rate: range is 0–7
2457.6 Mbps line rate: range is 0–15
3072.2 Mbps line rate: range is 0–19
4195.2 Mbps line rate: 0–31
6144.0 Mbps line rate: 0–39
Table 6–37 on page
Description
6–16. The signal is asserted for the
CPRI MegaCore Function User Guide
5–11