Visible to Intel only — GUID: nik1411442178668
Ixiasoft
Visible to Intel only — GUID: nik1411442178668
Ixiasoft
3.15.2.2. Specifying the Position in the Control Word
You can access 32 bits in a single register access. Depending on the CPRI line bit rate, a control word may have multiple 32-bit sections. Therefore, in addition to specifying the control word location in the CPRI frame, you must also specify a 32-bit aligned position in the control word.
CPRI Bit Rate (Gbps) | Register Access Sequence Number ({rx,tx}_ctrl_seq) | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
0 (first access) |
1 (2nd access) |
2 (3rd access) |
3 4th access) |
4 (5th access) |
5 (6th access) |
6 (7th access) |
7 (8th access) |
8 (9th access) |
9 (10th access) |
10 (11th access) |
11 (12th access) |
|
0.6144 | FF000000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
1.2288 | FFFF0000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
2.4576 | FFFFFFFF | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
3.072 | FFFFFFFF | FF000000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
4.9152 | FFFFFFFF | FFFFFFFF | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
6.144 | FFFFFFFF | FFFFFFFF | FFFF0000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
8.11008, 9.8034 | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
10.1376 | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FF000000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
12.16512 | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | 0 | 0 | 0 | 0 | 0 | 0 |
24.33024 | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF | FFFFFFFF |
- At the CPRI line bit rate of 0.6144 Gbps, when you access hyperframe control word X, the 8-bit control word from hyperframe position #Z.X.0 is in bits [31:24] of the register.
- At the CPRI line bit rate of 1.2288 Gbps, the byte from position #Z.X.0.0 is in bits [31:24] of the register and the byte from position #Z.X.0.1 is in bits [23:16] of the register.
- At the CPRI line bit rate of 3.072 Gbps, you must access the register twice to retrieve or write the full control word. In the first access operation, you access the 32 bits of the control word in positions #Z.X.0.0 (in register bits [31:24]), #Z.X.0.1 (in register bits [23:16]), #Z.X.0.2 (in register bits [15:8]), and #Z.X.0.3 (in register bits [7:0]). In the second access operation, you access the eight bits of the control word in position #Z.X.0.4 in bits [31:24] of the register.
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