IP-CPRI Altera, IP-CPRI Datasheet - Page 120
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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
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6–18
Table 6–44. CPRI_IQ_RX_BUF_CONTROL—MAP Receiver FIFO Buffer Control—Offset: 0x150
Table 6–45. CPRI_IQ_TX_BUF_CONTROL—MAP Transmitter FIFO Buffer Control—Offset: 0x160
Table 6–46. CPRI_IQ_RX_BUF_STATUS—MAP Receiver FIFO Buffer Status—Offset: 0x180–0x184
Table 6–47. CPRI_IQ_TX_BUF_STATUS—MAP Transmitter FIFO Buffer Status—Offset: 0x1A0–0x1A4
Ethernet Registers
CPRI MegaCore Function User Guide
RSRV
map_rx_enable
RSRV
map_tx_enable
buffer_rx_underflow
buffer_rx_overflow
Note to
(1) If this CPRI IP core has more than 16 antenna-carrier interfaces (N_MAP > 16), the status for antenna-carrier interfaces 0 through 15 is in the
buffer_tx_underflow
buffer_tx_overflow
Note to
(1) If this CPRI IP core has more than 16 antenna-carrier interfaces (N_MAP > 16), the status for antenna-carrier interfaces 0 through 15 is in the
register at offset 0x180, and the status for antenna-carrier interfaces 16 and up is in the register at offset 0x184. The maximum number of
antenna-carrier interfaces in the CPRI IP core is 24.
register at offset 0x1A0, and the status for antenna-carrier interfaces 16 and up is in the register at offset 0x1A4. The maximum number of
antenna-carrier interfaces in the CPRI IP core is 24.
Table
Table
Field
Field
Field
Field
6–46:
6–47:
This section lists the Ethernet registers.
Ethernet registers.
CPRI IP core.
[31:N_MAP]
[(N_MAP-1):0]]
[31:N_MAP]
[(N_MAP-1):0]]
[(N_MAP+15):16] RC
[(N_MAP-1):0]]
[(N_MAP+15):16] RC
[(N_MAP-1):0]]
Bits
Bits
Bits
Bits
Table 6–49
UR0
UR0
Access
RW
Access
RW
RC
RC
Access
Access
through
Reserved.
Enables or disables the corresponding
antenna-carrier receiver interfaces. The
bits of this field propagate to the
corresponding cpri_map_rx_en output
signals.
Reserved.
Enables or disables the corresponding
antenna-carrier transmitter interfaces.
The bits of this field propagate to the
corresponding cpri_map_tx_en output
signals.
Indicates MAP Rx buffer underflow in the
corresponding antenna-carrier interfaces.
Indicates MAP Rx buffer overflow in the
corresponding antenna-carrier interfaces.
Indicates MAP Tx buffer underflow in the
corresponding antenna-carrier interfaces.
Indicates MAP Tx buffer overflow in the
corresponding antenna-carrier interfaces.
Table 6–64
Table 6–48
Function
Function
describe the Ethernet registers in the
provides a memory map for the
Function
Function
Chapter 6: Software Interface
May 2011 Altera Corporation
(Note 1)
(Note 1)
0
(N_MAP)’h7F
(all 1s)
0
(N_MAP)’h7F
(all 1s)
Ethernet Registers
Default
Default
Default
16'h0
16'h0
Default
16'h0
16'h0
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