XC2000 datasheet(19/729 Pages) INFINEON

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XC2000 Derivatives

Peripheral Units (Vol. 2 of 2)

The General Purpose Timer Units

Preliminary

User’s Manual

14-1

V1.0, 2007-06

GPT_X7, V2.0

The General Purpose Timer Units

The General Purpose Timer Unit blocks GPT1 and GPT2 have very flexible

multifunctional timer structures which may be used for timing, event counting, pulse

width measurement, pulse generation, frequency multiplication, and other purposes.

They incorporate five 16-bit timers that are grouped into the two timer blocks GPT1 and

GPT2. Each timer in each block may operate independently in a number of different

modes such as gated timer or counter mode, or may be concatenated with another timer

of the same block. Each block has alternate input/output functions and specific interrupts

associated with it.

Block GPT1 contains three timers/counters: The core timer T3 and the two auxiliary

timers T2 and T4. The maximum resolution is

GPT/4. The auxiliary timers of GPT1 may

optionally be configured as reload or capture registers for the core timer. These registers

are listed in Section 14.1.6.

•

GPT/4 maximum resolution

• 3 independent timers/counters

• Timers/counters can be concatenated

• 4 operating modes:

–Timer Mode

– Gated Timer Mode

– Counter Mode

– Incremental Interface Mode

• Reload and Capture functionality

• Separate interrupt lines

Block GPT2 contains two timers/counters: The core timer T6 and the auxiliary timer T5.

The maximum resolution is

GPT/2. An additional Capture/Reload register (CAPREL)

supports capture and reload operation with extended functionality. These registers are

listed in Section 14.2.7. The core timer T6 may be concatenated with timers of the

CAPCOM units (T0, T1, T7, and T8).

The following list summarizes the features which are supported:

•

GPT/2 maximum resolution

• 2 independent timers/counters

• Timers/counters can be concatenated

• 3 operating modes:

–Timer Mode

– Gated Timer Mode

– Counter Mode

• Extended capture/reload functions via 16-bit capture/reload register CAPREL

• Separate interrupt lines

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