TS68230 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS68230

HMOS PARALLEL INTERFACE/TIMER

STMicroelectronics 

TS68230

Table 1.3 : Register Model (sheet 1 of 2).

Register

Select Bits

54321

00000

00001

00010

00011

00100

00101

00110

00111

01000

01001

01010

01011

01100

01101

01110

7

6

5

4

3

2

1

0

Port Mode

H34 H12 H4

H3

H2

H1

Control

Enable Enable Sense Sense Sense Sense

I

SVCRQ

Select

IPF

Select

Port Interrupt

Priority Control

Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

7

6

5

4

3

2

1

0

Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

7

6

5

4

3

2

1

0

Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

7

6

5

4

3

2

1

0

Interrupt Vector

Number

I

I

Port A

Submode

H2 Control

H2

H1

H1

Int SVCRQ Stat

Enable Enable Ctrl

Port B

Submode

H4 Control

H4

H3

H3

Int SVCRQ Stat

Enable Enable Ctrl

Bit

Bit

Bit

Bit

Bit

Bit Bit

Bit

7

6

5

4

3

2

1

0

Bit

Bit

Bit

Bit

Bit

Bit Bit

Bit

7

6

5

4

3

2

1

0

Bit

Bit

Bit

Bit

Bit

Bit Bit

Bit

7

6

5

4

3

2

1

0

Bit

Bit

Bit

Bit

Bit

Bit Bit

Bit

7

6

5

4

3

2

1

0

Bit

Bit

Bit

Bit

Bit

Bit Bit

Bit

7

6

5

4

3

2

1

0

H4

H3

H2

H1 H4S H3S H2S H1S

Level Level Level Level

I

I

I

I

I

I

I

I

Register

Value

after

RESET

(hex

value)

00

00

00

00

00

0F

00

00

II

II

III

III

IIII

IIII

00

Port General

Control Register

Port Service

Request Register

Port A Data

Direction Register

Port B Data

Direction Register

Port C Data

Direction Register

Port Interrupt

Vector Register

Port A Control

Register

Port B Control

Register

Port A Data

Register

Port B Data

Register

Port A Alternate

Register

Port B Alternate

Register

Port C Data

Register

Port Status

Register

(null)

01111 I

I

I

I

I

I

I

I

0 0 (null)

* Unused, read as zero.

** Value before RESET.

*** Current value on pins.

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