Garmin LIDAR-Lite v1 Silver Label Operating Manual page 45

Bit 7 Eye Safe
Bit 6 Signal
Invalid
Bit 5 Timestamp
Bit 4 Second
Peak
Bit 3 PIN Status
Bit 2 Sig Overflow Overflow detected in correlation process associated with a signal
Bit 1 Ref
Overflow
Bit 0 Busy
Control Register #73(0x49) (control_reg [73]:)
Notes
● Measured DC value out of correlation sampler input [Read Only]:​ Value based on the ratio of
1's and 0's
Control Register #74(0x4a) (control_reg [74]:)
Bit Function
Bit 7
Bit 6
Bit 5
Bit 4 Busy Flag
Bit 3 Detector
sel
Bit 2 Preamp
gain
Bit 1 xmt 2 en
Bit 0 xmt 1 en
LIDAR­Lite v1 "Silver Label" Manual​ , Updated: 08/13/15
Indicates that eye safety average power limit has been exceeded and
power reduction is in place
Signal Invalid – "1" No signal detected, "0' signal detected
Active between velocity measurement pairs
Indicates a second peak was detected. 2nd peak value compared to noise
floor
Indicates the state of the Mode Select external pin. De­bounced, masked
from output signals, inverted
acquisition
Overflow detected in correlation process associated with the reference
acquisition
Busy, indicates that the processor is actively performing an acquisition
process.
Notes
Busy flag outputs on mode select pin with I2C initiated acquisition. High
causes pin output to be driven low
Select receiver detector 1 or 2 – not used in LIDAR­Lite product
Selects high 2x or low gain 1x setting – not used in LIDAR­Lite product
Enables transmit channel 2 high­side current source
Enables transmit channel 1 high­side current source