GC5018_06 Datasheet, PDF (66/134 Pages) Texas Instruments – 8-CHANNEL WIDEBAND RECEIVER

GC5018
8-CHANNEL WIDEBAND RECEIVER
SLWS169A – MAY 2005 – REVISED NOVEMBER 2005
4.4.3.9 RECV_PMETER0_SQR_SUM_LSB Register
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Register name: RECV_PMETER0_SQR_SUM_LSB
Page: 0x1800 Address: 0x08
BIT 15
recv_pmeter0_sqr_sum (15:8)
0
0
0
0
0
0
0
BIT 7
recv_pmeter0_sqr_sum (7:0)
0
0
0
0
0
0
0
BIT 8
0
BIT 0
0
recv_pmeter0_sqr_sum(15:0) : The sqr_sum register controls the number of samples to accumulate for
a power measurement. Ia is (or Ia & Qa if complex mode is selected are) squared and
accumulated. Eight Ia samples (or eight sample pairs of Ia and Qa samples) equal to one
sqr_sum count. The accumulation interval is initiated when the sync is asserted and the
programmed (8*sync_delay+2) samples has expired or when the interval start time is
reached. When the (8*sqr_sum+1) sample time is reached, the accumulated powers are
made available for MPU access and an interrupt is generated.
4.4.3.10 RECV_PMETER0_STRT_INTVL_LSB Register
Register name: RECV_PMETER0_STRT_INTVL_LSB
Page: 0x1800 Address: 0x09
BIT 15
recv_pmeter0_strt_intrvl (15:8)
0
0
0
0
0
0
0
BIT 7
recv_pmeter0_strt_intrvl (7:0)
0
0
0
0
0
0
0
BIT 8
0
BIT 0
0
recv_pmeter0_strt_intrvl(15:0) : The start interval timer is the interval over which the sqr_sum is
restarted. The timer value is (8*strt_intrvl + 1) samples and must be larger than
(8*sqr_sum+1) samples. The interval start counter and RMS power accumulation is started
at the sync pulse after the programmed delay and every time the STRT_INTRVL counter
reaches its limit.
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GC5018 GENERAL CONTROL