Altera CPRI v6.0 MegaCore Function Bedienungsanleitung Seite 49

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Seitenansicht 48
various direct interfaces in this format. The only exception is the L1 CSR interface, which transmits and
receives information in individual bits.
Figure 3-12: AUX Interface Data at Different CPRI Line Bit Rates
The AUX interface presents and expects data in fixed 32-bit words. The mapping of the CPRI frame to
and from 32-bit words depends on the CPRI v6.0 IP core bit rate. This figure illustrates how CPRI frame
words are mapped to 32-bit words on the AUX interface 32-bit data bus.
0.6144 Gbps
Line Rate:
1.2288 Gbps
Line Rate:
2.4576 Gbps
Line Rate:
3.072 Gbps
Line Rate:
0 1 2 3
[31:24]
#Z.X.0.0
(1)
#Z.X.4.0 #Z.X.8.0 #Z.X.12.0
[23:16] #Z.X.1.0 #Z.X.5.0 #Z.X.9.0 #Z.X.13.0
[15:8] #Z.X.2.0 #Z.X.6.0 #Z.X.10.0 #Z.X.14.0
[7:0] #Z.X.3.0 #Z.X.7.0 #Z.X.11.0 #Z.X.15.0
0 1 2 ... 7
[31:24]
#Z.X. 0.0
(1)
#Z.X.2.0 #Z.X.4.0 ... #Z.X.14.0
[23:16]
#Z.X. 0.1
(1)
#Z.X.2.1 #Z.X.4.1 ... #Z.X.14.1
[15:8] #Z.X.1.0 #Z.X.3.0 #Z.X.5.0 ... #Z.X.15.0
[7:0] #Z.X.1.1 #Z.X.3.1 #Z.X.5.1 ... #Z.X.15.1
0 1 2 ... 15
[31:24]
#Z.X.0.0
(1)
#Z.X.1.0 #Z.X.2.0 ... #Z.X.15.0
[23:16] #Z.X.0.1
(1)
#Z.X.1.1 #Z.X.2.1 ... #Z.X.15.1
[15:8] #Z.X.0.2
(1)
#Z.X.1.2 #Z.X.2.2 ... #Z.X.15.2
[7:0] #Z.X.0.3
(1)
#Z.X.1.3 #Z.X.2.3 ... #Z.X.15.3
0 1 2 ... 18 19
[31:24] #Z.X.0.0
(1)
#Z.X.0.4
(1)
#Z.X.1.3 ... #Z.X.14.2 #Z.X.15.1
[23:16] #Z.X.0.1
(1)
#Z.X.1.0 #Z.X.1.4 ... #Z.X.14.3 #Z.X.15.2
[15:8] #Z.X.0.2
(1)
#Z.X.1.1 #Z.X.2.0 ... #Z.X.14.4 #Z.X.15.3
[7:0] #Z.X.0.3
(1)
#Z.X.1.2 #Z.X.2.1 ... #Z.X.15.0 #Z.X.15.4
Sequence number on AUX interface
Sequence number on AUX interface
Sequence number on AUX interface
Sequence number on AUX interface
UG-01156
2014.08.18
Direct Interface CPRI Frame Data Format
3-19
Functional Description
Altera Corporation
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