TMF8805 datasheet(32/74 Pages) OSRAM

32 / 74 page

TMF8805

Datasheet

• PUBLIC • Document Feedback

DS000692

• v7-00 • 2023-Dec-01

32 / 74

Addr: 0x10

COMMAND

Field

Name

Rst

Type

Description

1 - Input: Active low disables collection, immediately

abandoning current measurement. Returning to high

restarts new measurement

2 - Input: Active high disables collection, immediately

abandoning current measurement. Returning to low

restarts new measurement

3 - Output: VCSEL pulse output

4 - Output low

5 - Output high

6:15 - Reserved, do not use

0x30

Enable histogram readout; the internal state machine will stop

when a histogram (e.g. calibration) is available and wait for

readout by the host. If the selected histogram is readout, the

host shall continue the state machine by sending command

0x32.

cmd_data3 = Bitmask for the histograms to be readout:

Bits

Definition

Always set to ‘0’

Set to get electrical calibration histograms

Always set to ‘0’

Set to get short distance histograms

6:5

Always set to ‘00’

Set to get distance measurement histograms.

Bin 127 respectively bin 255 is used as scaling factor

for this type of histograms. The scaling factor is 0 for no

scaling, 1 for 2x, 2 for 4x and so on.

cmd_data2 = Set to 0x00

cmd_data1 = = Bitmask for pileup correct histograms readout:

Bits

Definition

Set to get pileup corrected distance measurement

histograms

Set to get pileup corrected sum histogram

Set bit 2 to get pileup corrected short distance

histogram

7:3

Always set to 0

cmd_data0 = Set to 0x00

Once above bitmask is set, the device is programmed to stop

when the histogram is available. Set command=0x04 0x03 to

actually perform the measurement.

0x32

After the host has readout the histogram, continue with internal

processing.

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