WT6016 데이터 시트보기 (PDF) - Unspecified

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WT6016

Digital Monitor Controller

Unspecified 

Port_C :

WT6016

Digital Monitor Controller

Ver. 1.51 Jul-31-1998

Pin PC0 - general purpose I/O pin shared with 4-bit A/D converter 0 input.

Pin PC1 - general purpose I/O pin shared with 4-bit A/D converter 1 input

Pin PC2 to PC7 - general purpose I/O pins.

The REG#14H defines the I/O direction and the REG#15H controls the output level.

The structure of Port_C is same as the Port_B except the sink current is 10mA. When PC0 and

PC1 are programmed as the A/D converter inputs, the pull high transistor is disconnected.

Address R/W

0014H W

0015H W

0015H R

Initial

00H

FFH

--

Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

PC7OE PC6OE PC5OE PC4OE PC3OE PC2OE PC1OE PC0OE

PC7W PC6W PC5W PC4W PC3W PC2W PC1W PC0W

PC7R PC6R PC5R PC4R PC3R PC2R PC1R PC0R

Bit Name

PC7OE - PC0OE

PC7W - PC0W

PC7R - PC0R

Bit value = “1”

Output enable.

Outputs high level (IOH= -5mA).

Pin is high level.

Bit value = “0”

Output disable (internal pull-up).

Outputs low level (IOL= 10mA).

Pin is low level.

Port_D :

Pin SCL1/PD0 - general purpose I/O pin shared with DDC interface serial clock.

Pin SDA1/PD1 - general purpose I/O pin shared with DDC interface serial data.

The structure of these two pins are same as the PB4 and PB5. Default is DDC interface and can be

changed to I/O port D by setting ENPD bit.

Address R/W Initial Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

000FH W 00H --

--

-- ENPD PD1OE PD0OE PD1W PD0W

000FH R

--

--

--

--

--

--

-- PD1R PD0R

Bit Name

ENPD

PD1OE - PD0OE

PD1W - PD0W

PD1R- PD0R

Bit value = “1”

Enable I/O Port_D.

Output enable.

Outputs high level (IOH= -5mA).

Pin is high level.

Bit value = “0”

DDC interface.(open drain)

Output disable (internal pull-up).

Outputs low level (IOL= 5mA).

Pin is low level.

* If program wants to read current status on the I/O pins (any I/O port), do not set output enable bit to

“0”. Because the registers for reading I/O are always indicating the current state on the I/O pins, set

output enable bit to “0” will change the level on the I/O pin. Please reference the I/O pin structure.

Weltrend Semiconductor, Inc.

7

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