Z87L01 datasheet(39/51 Pages) ZILOG

39 / 51 page

Z87001/Z87L01

Zilog

ROMless Spread Spectrum Cordless Phone Controller

DS96WRL0800

P R E L I M I N A R Y

Table 17. Bank 3 Register Description

GPIO0DATA

Field

Bank 3

Bit Position

EXT5

R/W

Data

Description

DATA0

fedcba9876543210

XXXXh

Access to Port 0 data

Reads pin values

Writes output pin values

Notes:

DATA0. The read value returns the actual pin values and does not depend on the pin directions

(i.e. for output pins, the output value is returned unless a contention occurs).

Table 18. Bank 3 Register Description

GPIO1DIR

Field

Bank 3

Bit Position

EXT6

R/W

Data

Description

DIRECTION1

fedcba9876543210

R/W

..0.

..1.

Independent control of Port 1 pin direction

Pin in input mode

Pin in output mode

Table 19. Bank 3 Register Description

GPIO1DATA

Field

Bank 3

Bit Position

EXT7

R/W

Data

Description

DATA1

fedcba9876543210

XXXXh

Access to Port 1 data

Reads pin values

Writes output pin values

Notes:

DATA1. The read value returns the actual pin values and does not depend on the pin directions

(i.e. for output pins, the output value is returned unless a contention occurs)

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