Table 4–5 – Altera CPRI IP Core User Manual
Page 49
Chapter 4: Functional Description
4–17
MAP Interface
December 2013
Altera Corporation
CPRI MegaCore Function
User Guide
shown in
, the maximum number of active data channels is higher in 15-bit
mode.
Table 4–5
shows the correspondence between these frequency factors in 16-bit
mode, and
shows the correspondence between these factors in 15-bit mode.
In 16-bit mode, the total number of bits in all the AxC containers in a basic frame is
2 × 16 ×
map_n_ac
×
map_ac
In 15-bit mode, the total number of bits in all the AxC containers in a basic frame is
2 × 15 ×
map_n_ac
×
map_ac
Table 4–5. Maximum Number of Active Data Channels in 16-Bit Mode
CPRI
Line Rate
(Mbps)
Number of Bits
in
IQ Data Block
Maximum Number of Active Data Channels in 16-Bit Mode
Data Channel
Bandwidth LTE
(MHz)
2.5
5
10
15
20
Sample Rate
(10
6
Sample/Sec)
3.84
7.68
15.36
23.04
30.72
614.4
120
3
1
—
—
—
1228.8
240
7
3
2
1
—
2456.7
480
15
7
3
2
1
3072
600
18
9
4
3
2
4915.2
960
30
15
7
5
3
6144
1200
37
18
9
6
4
9830.4
1920
60
30
15
10
7
Note to
Table 4–5
:
(1) The maximum number of data channels supported by the CPRI IP core is 24. The numbers in the table that are larger than 24 are hypothetical;
the CPRI IP core cannot implement them.
Table 4–6. Maximum Number of Active Data Channels in 15-Bit Mode
CPRI
Line Rate
(Mbps)
Number of Bits
in
IQ Data Block
Maximum Number of Active Data Channels in 15-Bit Mode
Data Channel
Bandwidth LTE
(MHz)
2.5
5
10
15
20
Sample Rate
(10
6
Sample/Sec)
3.84
7.68
15.36
23.04
30.72
614.4
120
4
2
1
—
—
1228.8
240
8
4
2
1
1
2456.7
480
16
8
4
2
2
3072
600
20
10
5
3
2
4915.2
960
16
8
5
4
6144
1200
20
10
6
5
9830.4
1920
32
16
10
8
Note to
(1) The maximum number of data channels supported by the CPRI IP core is 24. The numbers in the table that are larger than 24 are hypothetical;
the CPRI IP core cannot implement them.