C167CS datasheet(128/517 Pages) INFINEON

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C167CS

Derivatives

Parallel Ports

User’s Manual

7-1

V2.0, 2000-07

Parallel Ports

In order to accept or generate single external control signals or parallel data, the

C167CS provides up to 111 parallel IO lines organized into one 16-bit IO port (Port 2),

eight 8-bit IO ports (PORT0 made of P0H and P0L, PORT1 made of P1H and P1L,

Port 4, Port 6, Port 7, Port 8), one 15-bit IO port (Port 3), and one 16-bit input port

(Port 5).

These port lines may be used for general purpose Input/Output controlled via software

or may be used implicitly by the C167CS’s integrated peripherals or the External Bus

Controller.

All port lines are bit addressable, and all input/output lines are individually (bit-wise)

programmable as inputs or outputs via direction registers (except Port 5, of course). The

IO ports are true bidirectional ports which are switched to high impedance state when

configured as inputs. The output drivers of six IO ports (2, 3, 4, 6, 7, 8) can be configured

(pin by pin) for push/pull operation or open-drain operation via control registers.

The logic level of a pin is clocked into the input latch once per state time, regardless

whether the port is configured for input or output.

Figure 7-1

SFRs and Pins associated with the Parallel Ports

P0L

MCA04460

Data Input / Output

Registers

Direction Control

Registers

Port Driver Control

Diverse Control

Registers

P0H

P1L

P1H

DP0L

DP2

DP4

DP0H

DP1L

DP1H

DP3

DP6

DP7

DP8

POCON2

POCON4

POCON0H

POCON1L

POCON1H

POCON3

POCON0L

POCON6

POCON7

POCON8

POCON20

PICON

P1DIDIS

ODP2

ODP3

ODP4

P5DIDIS

ODP6

ODP7

ODP8

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