C167CS datasheet(367/517 Pages) INFINEON

367 / 517 page

C167CS

Derivatives

The Analog/Digital Converter

User’s Manual

18-10

V2.0, 2000-07

A Channel Injection can be Triggered in Two Ways:

• setting of the Channel Injection Request bit ADCRQ via software

• a compare or a capture event of Capture/Compare register CC31 of the CAPCOM2

unit, which also sets bit ADCRQ.

The second method triggers a channel injection at a specific time, on the occurrence of

a predefined count value of the CAPCOM timers or on a capture event of register CC31.

This can be either the positive, the negative, or both the positive and the negative edge

of an external signal. In addition, this option allows recording the time of occurrence of

this signal.

Note: The channel injection request bit ADCRQ will be set on any interrupt request of

CAPCOM2 channel CC31, regardless whether the channel injection mode is

enabled or not. It is recommended to always clear bit ADCRQ before enabling the

channel injection mode.

After the completion of the current conversion (if any is in progress) the converter will

start (inject) the conversion of the specified channel. When the conversion of this

channel is complete, the result will be placed into the alternate result register

ADDAT2, and a Channel Injection Complete Interrupt request will be generated,

which uses the interrupt request flag ADEIR (for this reason the Wait for ADDAT

Read Mode is required).

Note: If the temporary data register used in Wait for ADDAT Read Mode is full, the

respective next conversion (standard or injected) will be suspended. The

temporary register can hold data for ADDAT (from a standard conversion) or for

ADDAT2 (from an injected conversion).

C167CS Datasheet(PDF) 367 Page - Infineon Technologies AG