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| author | Martin Braun <martin.braun@ettus.com> | 2015-01-27 09:11:29 +0100 |
|---|---|---|
| committer | Martin Braun <martin.braun@ettus.com> | 2015-01-27 09:11:29 +0100 |
| commit | d238f12252870d73df125649d965edc2a05debf5 (patch) | |
| tree | 13a80c077993812e61fb04be994e1159fe56cbb3 /host/lib/usrp/common/ad9361_driver/ad9361_device.cpp | |
| parent | fd8ccc869ae4f61f1171c894954d980aea57d4aa (diff) | |
| parent | 5e9ffca09b0f6b8aba38ca7f0e9ed37eab8a43b9 (diff) | |
| download | uhd-d238f12252870d73df125649d965edc2a05debf5.tar.gz uhd-d238f12252870d73df125649d965edc2a05debf5.tar.bz2 uhd-d238f12252870d73df125649d965edc2a05debf5.zip | |
Merge branch 'maint' into maint
Diffstat (limited to 'host/lib/usrp/common/ad9361_driver/ad9361_device.cpp')
| -rw-r--r-- | host/lib/usrp/common/ad9361_driver/ad9361_device.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp index 3ce655c9b..97b214d7d 100644 --- a/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp +++ b/host/lib/usrp/common/ad9361_driver/ad9361_device.cpp @@ -135,9 +135,15 @@ void ad9361_device_t::_program_fir_filter(direction_t direction, int num_taps, b _io_iface->poke8(base + 5, reg_numtaps | 0x1A); if (direction == RX) { _io_iface->poke8(base + 5, reg_numtaps | 0x18); + /* Rx Gain, set to prevent digital overflow/saturation in filters + 0:+6dB, 1:0dB, 2:-6dB, 3:-12dB + page 35 of UG-671 */ _io_iface->poke8(base + 6, 0x02); /* Also turn on -6dB Rx gain here, to stop filter overfow.*/ } else { - _io_iface->poke8(base + 5, reg_numtaps | 0x19); /* Also turn on -6dB Tx gain here, to stop filter overfow.*/ + /* Tx Gain. bit[0]. set to prevent digital overflow/saturation in filters + 0: 0dB, 1:-6dB + page 25 of UG-671 */ + _io_iface->poke8(base + 5, reg_numtaps | 0x18); } } |