TMF8805 datasheet(33/74 Pages) OSRAM

33 / 74 page

TMF8805

Datasheet

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DS000692

• v7-00 • 2023-Dec-01

33 / 74

Addr: 0x10

COMMAND

Field

Name

Rst

Type

Description

0x47

Read out serial number

– results see section 6.6 Serial number

readout

– if register register_contents=0x47

0x49

Change the I²C address of TMF8805

cmd_data0 = Condition if I²C address is changed; program the

GPIOs input/output accordingly before using this feature

(commands 0x02, 0x03 or 0x0F):

Bits

Definition

mask_gpio0

mask_gpio1

value_gpio0

value_gpio1

7:4

always set to 0

The I²C address change is executed only if

(mask_gpio1 & GPIO1) << 1 + (mask_gpio0 & GPIO0) ==

value_gpio1 << 1 + value_gpio0

where GPIO1 and GPIO0 is the current status on pin GPIO1 and

pin GPIO0. If this conditional programming is not used, set

cmd_data0 to 0x00.

cmd_data1 = New I²C address

Bits

Definition

Set to ‘0’

7:1

New I²C address to be used

0x80..

0x93

Read 1 quarter of one histogram - copy histogram bits[4:2] to

select TDC0…TDC4, quarter bits[1:0] into 0x20..0x9f

Note: At the end of the transaction of read a quarter, the

contents of the registers from 0x20-0x9F will be automatically

updated, and the contents of registers REGISTER_CONTENTS

and TID will be updated.

Note: At the end of a TDC, the TDC number will also auto

increment.

0xFF

Stop whatever you are doing as soon as possible and reenter

the idle state. The current state will not be interrupted and will

require leaving the current state processing to take effect. This

command will stop continuous measurement.

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