C167CS datasheet(176/517 Pages) INFINEON

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C167CS

Derivatives

Parallel Ports

User’s Manual

7-49

V2.0, 2000-07

Alternate Functions of Port 7

The upper four lines of Port 7 (P7.7-4) serve as capture inputs or compare outputs

(CC31IO … CC28IO) for the CAPCOM2 unit.

The usage of the port lines by the CAPCOM unit, its accessibility via software, and the

precautions are the same as described for the Port 2 lines.

As all other capture inputs, the capture input function of pins P7.7-4 can also be used as

external interrupt inputs (sample rate 16 TCL).

The lower 4 lines of Port 7 (P7.3-0) serve as outputs from the PWM module (POUT3 …

POUT0). At these pins the value of the respective port output latch is XORed with the

value of the PWM output rather than ANDed, as the other pins do. This allows to use the

alternate output value either as it is (port latch holds a ‘0’) or invert its level at the pin (port

latch holds a ‘1’).

Note that the PWM outputs must be enabled via the respective PENx bits in PWMCON1.

Table 7-9 summarizes the alternate functions of Port 7.

ODP7

P7 Open Drain Ctrl. Reg.

ESFR (F1D2H/E9H)

Reset Value: - - 00H

98765

43210

ODP7

2.1

ODP7

Bit

Function

ODP7.y

Port 7 Open Drain control register bit y

ODP7.y = 0: Port line P7.y output driver in push/pull mode

ODP7.y = 1: Port line P7.y output driver in open drain mode

Table 7-9

Alternate Functions of Port 7

Port 7 Pin

Alternate Function

P7.0

P7.1

P7.2

P7.3

P7.4

P7.5

P7.6

P7.7

POUT0

PWM model channel 0 output

POUT1

PWM model channel 1 output

POUT2

PWM model channel 2 output

POUT3

PWM model channel 3 output

CC28IO

Capture input/compare output channel 28

CC29IO

Capture input/compare output channel 29

CC30IO

Capture input/compare output channel 30

CC31IO

Capture input/compare output channel 31

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