TDC-GPX2 datasheet(45/77 Pages) AMSCO

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ams Datasheet

Page 45

[v1-03] 2017-Dec-18

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TDC-GPX2 − Detailed Description

Communication Commands (Opcodes)

Figure 47:

Opcodes Overview

Detailed Command Description

Power-ON Reset

After stabilization of all VDD33 and VDD18 the device expects

the opcode spiopc_power = 0x30 to be sent via the SPI interface

for power on reset. After the last bit of the opcode the reset

remains active during tHD,SSN before the device is ready for the

next read or write access. After the reset, the measurement is

stopped and the configuration registers are set to internal

defaults of the chip.

Figure 48:

Power-On Reset Opcode

Opcode

HEX / BIN

Description

spiopc_power

0x30 = 0b00110000

Power on reset and stop measurement

spiopc_init

0x18 = 0b00011000

Initializes Chip and starts measurement

spiopc_write_config

0x80 = 0b100XXXXX

Write to configuration register X=0..17

spiopc_read_results

0x60 = 0b011XXXXX

Read opcode for result and status register X=8..31

spiopc_read_config

0x40 = 0b010XXXXX

Readout of configuration register X=0..17

011

SSN

SCK

MOSI

Opcode 0x30

TDC-GPX2 Datasheet(PDF) 45 Page - ams AG

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