From c0444b8eb63a4783657d55bef1a7e3c027fd035c Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Tue, 22 Jan 2008 00:06:28 +0000
Subject: Further attempted noise reduction for ticket:230
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@7486 221aa14e-8319-0410-a670-987f0aec2ac5
---
gr-usrp/src/db_flexrf.py | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
(limited to 'gr-usrp/src')
diff --git a/gr-usrp/src/db_flexrf.py b/gr-usrp/src/db_flexrf.py
index b998e1088e..b5a0cab13e 100644
--- a/gr-usrp/src/db_flexrf.py
+++ b/gr-usrp/src/db_flexrf.py
@@ -88,6 +88,9 @@ class flexrf_base(db_base.db_base):
def __del__(self):
#print "flexrf_base.__del__"
self._u.write_io(self._which, self.power_off, POWER_UP) # turn off power to board
+ # Power down VCO/PLL
+ self.PD = 3
+ self._write_control(self._compute_control_reg())
self._enable_refclk(False) # turn off refclk
self.set_auto_tr(False)
@@ -410,15 +413,19 @@ class _AD4360_common(object):
R = (self.R_RSV<<22) | (self.BSC<<20) | (self.TEST<<19) | (self.LDP<<18) \
| (self.ABP<<16) | (self.R_DIV<<2)
- control = (self.P<<22) | (self.PD<<20) | (self.CP2<<17) | (self.CP1<<14) | (self.PL<<12) \
- | (self.MTLD<<11) | (self.CPG<<10) | (self.CP3S<<9) | (self.PDP<<8) | \
- (self.MUXOUT<<5) | (self.CR<<4) | (self.PC<<2)
+ control = self._compute_control_reg()
N = (self.DIVSEL<<23) | (self.DIV2<<22) | (self.CPGAIN<<21) | (self.B_DIV<<8) | \
(self.N_RSV<<7) | (self.A_DIV<<2)
return (R,control,N,actual_freq/self.freq_mult)
+ def _compute_control_reg(self):
+ control = (self.P<<22) | (self.PD<<20) | (self.CP2<<17) | (self.CP1<<14) | (self.PL<<12) \
+ | (self.MTLD<<11) | (self.CPG<<10) | (self.CP3S<<9) | (self.PDP<<8) | \
+ (self.MUXOUT<<5) | (self.CR<<4) | (self.PC<<2)
+ return control
+
def _refclk_divisor(self):
"""
Return value to stick in REFCLK_DIVISOR register
--
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