C508 datasheet(41/93 Pages) INFINEON

41 / 93 page

C508

Data Sheet

2000-08

In the combined multi-channel PWM modes the signal generation of the CCx and

COUTx PWM outputs can basically be controlled either by the interrupt inputs INT0 to

INT2 (block commutation mode) or by the operation of Compare Timer 1 or by software

(multi-channel PWM mode).

Figure 17 shows the block diagram of the multi-channel PWM mode logic which is

integrated in the C508.

Figure 17

Block Diagram of the Combined Multi-Channel PWM Modes in the

C508

At the multi-channel PWM modes of the C508, a change of the PWM output states

(active or inactive) is triggered by Compare Timer 1, which is running either in operating

mode 0 or 1. If its count value reaches 0000H, the PWM output signal changes its state

according to a well defined state table. The multi-channel PWM modes are split up into

three modes:

– 4-phase multi-channel PWM mode (4 PWM output signals)

– 5-phase multi-channel PWM mode (5 PWM output signals)

– 6-phase multi-channel PWM mode (6 PWM output signals)

MCB04070

Port 1

Control Logic

CC0

CC1

CC2

COUT0

COUT1

COUT3

Trap Control

CTRAP

Combined

Multi-Channel

PWM

Control

(BCON)

INT0

INT1

INT2

CCU

Emergency

Interrupt

16-Bit

Compare

Timer 1

Channel 0

Capture Mode

10-Bit

Compare

Timer 2

Phase

Delay

Timer

PWM

COUT2

Period/

Comp.Match

Interrupt

Capture

Interrupt

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