SWRA574B October 2017 – February 2020 AWR1243 , AWR2243
The important parameters that are configured to AWR2243 devices in a two chip cascade system are tabulated here, to illustrate usage possibilities. Although only two devices are shown here, the example can be expanded to more devices (one of them being a master and others being slaves).
Parameter | Device 1 | Device 2 |
---|---|---|
Cascade Configuration | MULTICHIP_MASTER | MULTICHIP_SLAVE |
Parameter | Device 1 | Device 2 |
---|---|---|
Profile 1 Start Frequency | 77 GHz | 77 GHz |
Profile 1 FMCW Slope | 30 MHz/µs | 30 MHz/µs |
Profile 1 Idle Time | 10 µs | 10 µs |
Profile 1 Ramp End Time | 30 µs | 30 µs |
Profile 1 Sampling Rate, no. of samples | 5 MSPS, 128 | 5 MSPS, 128 |
Profile 1 TX power (backoff) | 0 dB | 2 dB |
Profile 2 Start Frequency | 78 GHz | 78 GHz |
Profile 2 FMCWC Slope | 60 MHz/µs | 60 MHz/µs |
Profile 2 Idle Time | 15 µs | 15 µs |
Profile 2 Ramp End Time | 60 µs | 60 µs |
Profile 2 Sampling Rate, no. of samples | 5 MSPS, 256 | 5 MSPS, 256 |
Profile 2 TX power (backoff) | 0 dB | 2 dB |
Profile Index | TX_ENABLE (TX1,2,3) | TX (1,2,3) BPM (Degrees) | Idle Time Dither | |||||
---|---|---|---|---|---|---|---|---|
Chirp Index | Device 1 | Device 2 | Device 1 | Device 2 | Device 1 | Device 2 | Device 1 | Device 2 |
0 | 1 | 1 | 1,0,0 | 0,0,0 | 0,0,0 | 0,0,0 | 0 µs | 0 µs |
1 | 1 | 1 | 0,1,0 | 0,0,0 | 0,0,0 | 0,0,0 | 2 µs | 2 µs |
2 | 1 | 1 | 0,0,1 | 0,0,0 | 0,0,0 | 0,0,0 | 0.5 µs | 0.5 µs |
3 | 1 | 1 | 0,0,0 | 1,0,0 | 0,0,0 | 0,0,0 | 1 µs | 1 µs |
4 | 1 | 1 | 0,0,0 | 0,1,0 | 0,0,0 | 0,0,0 | 1.5 µs | 1.5 µs |
5 | 1 | 1 | 0,0,0 | 0,0,1 | 0,0,0 | 0,0,0 | 0 µs | 0 µs |
6 | 1 | 1 | 1,0,0 | 0,0,0 | 180,0,0 | 0,0,0 | 0 µs | 0 µs |
7 | 1 | 1 | 0,1,0 | 0,0,0 | 0,180,0 | 0,0,0 | 2 µs | 2 µs |
8 | 1 | 1 | 0,0,1 | 0,0,0 | 0,0,180 | 0,0,0 | 0.5 µs | 0.5 µs |
9 | 1 | 1 | 0,0,0 | 1,0,0 | 0,0,0 | 180,0,0 | 1 µs | 1 µs |
10 | 1 | 1 | 0,0,0 | 0,1,0 | 0,0,0 | 0,180,0 | 1.5 µs | 1.5 µs |
11 | 1 | 1 | 0,0,0 | 0,0,1 | 0,0,0 | 0,0,180 | 0 µs | 0 µs |
12 | 2 | 2 | 1,0,0 | 0,0,0 | 0,0,0 | 0,0,0 | 0 µs | 0 µs |
13 | 2 | 2 | 0,1,0 | 0,0,0 | 0,0,0 | 0,0,0 | 2 µs | 2 µs |
14 | 2 | 2 | 0,0,1 | 0,0,0 | 0,0,0 | 0,0,0 | 0.5 µs | 0.5 µs |
15 | 2 | 2 | 0,0,0 | 1,0,0 | 0,0,0 | 0,0,0 | 1 µs | 1 µs |
16 | 2 | 2 | 0,0,0 | 0,1,0 | 0,0,0 | 0,0,0 | 1.5 µs | 1.5 µs |
17 | 2 | 2 | 0,0,0 | 0,0,1 | 0,0,0 | 0,0,0 | 0 µs | 0 µs |
18 | 2 | 2 | 1,0,0 | 0,0,0 | 180,0,0 | 0,0,0 | 0 µs | 0 µs |
19 | 2 | 2 | 0,1,0 | 0,0,0 | 0,180,0 | 0,0,0 | 2 µs | 2 µs |
20 | 2 | 2 | 0,0,1 | 0,0,0 | 0,0,180 | 0,0,0 | 0.5 µs | 0.5 µs |
21 | 2 | 2 | 0,0,0 | 1,0,0 | 0,0,0 | 180,0,0 | 1 µs | 1 µs |
22 | 2 | 2 | 0,0,0 | 0,1,0 | 0,0,0 | 0,180,0 | 1.5 µs | 1.5 µs |
23 | 2 | 2 | 0,0,0 | 0,0,1 | 0,0,0 | 0,0,180 | 0 µs | 0 µs |
NOTE
The timing dither parameters are different chirp to chirp but similar for both devices.
Parameter | Device 1 | Device 2 |
---|---|---|
Start Chirp Index | 0 | 0 |
End Chirp Index | 23 | 23 |
Number of loops | 8 | 8 |
Frame Periodicity | 50 ms | 50 ms |
Number of Frames | 100 | 100 |
Trigger Mode | SWTRIG | HWTRIG |
The frame trigger messages are given in this order:
With this, the desired number of frames gets generated from all AWR2243 devices in the cascaded system in tandem.