GC5018_06 Datasheet, PDF (91/134 Pages) Texas Instruments – 8-CHANNEL WIDEBAND RECEIVER

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4.4.4.35 RAGC2_SD_THRESH Register
GC5018
8-CHANNEL WIDEBAND RECEIVER
SLWS169A – MAY 2005 – REVISED NOVEMBER 2005
Register name: RAGC2_SD_THRESH
BIT 15
0
0
0
BIT 7
0
0
0
Page: 0x1860 Address: 0x22
sd_thresh_2(15:8)
0
0
0
0
sd_thresh_2(7:0)
0
0
0
0
BIT 8
0
BIT 0
0
sd_thresh_2(15:0) : This is the threshold used by the Signal Detect block to determine if there is signal
on the inputs. The comparison is done to the output of the squarer block, which is a 32 bit
word. Because of this, these bits are aligned with bits 24 down to 8 of the 32 bit squared
value.
4.4.4.36 RAGC2_SD_TIMER Register
Register name: RAGC2_SD_TIMER
BIT 15
0
0
0
BIT 7
0
0
0
Page: 0x1860 Address: 0x23
sd_timer_2(15:8)
0
0
0
0
sd_timer_2(7:0)
0
0
0
0
BIT 8
0
BIT 0
0
sd_timer_2(15:0) : After the first no signal sample occurs, this is the amount of samples that control the
length of time to determine the loss of signal condition.
4.4.4.37 RAGC2_SD_SAMPLES Register
Register name: RAGC2_SD_SAMPLES
BIT 15
0
0
0
BIT 7
0
0
0
Page: 0x1860 Address: 0x24
sd_samples_2(15:8)
0
0
0
0
sd_samples_2(7:0)
0
0
0
0
BIT 8
0
BIT 0
0
sd_samples_2(15:0) : Number of samples that must be below the sd_thresh_X threshold within the
sd_timer_X timer value for the loss of signal condition to occur.
GC5018 GENERAL CONTROL
91