TS68230 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS68230

HMOS PARALLEL INTERFACE/TIMER

STMicroelectronics 

TS68230

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

Register

Select Bits

54321 7

6

5

4

3

10000

TOUT/TIACK

Control

ZD

I

Ctrl

1 0 0 0 1 Bit

Bit

Bit

Bit

Bit

7

6

5

4

3

10010 I

I

I

I

I

2

1

Clock

Control

Bit

Bit

2

1

I

I

0

Timer

Enable

Bit

0

I

Register

Value

after

RESET

(hex

value)

00

0F

00

Timer Control

Register

Timer Interrupt

Vector Register

(null)

1 0 0 1 1 Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

23

22

21

20

19

18

17

16

1 0 1 0 0 Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

15

14

13

12

11

10

9

8

1 0 1 0 1 Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

7

6

5

4

3

2

1

0

10110 I

I

I

I

I

I

I

I

II

Counter Preload

Register (high)

II

Counter Preload

Register (mid)

II

Counter Preload

Register (low)

0 0 (null)

1 0 1 1 1 Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

23

22

21

20

19

18

17

16

1 1 0 0 0 Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

15

14

13

12

11

10

9

8

1 1 0 0 1 Bit

Bit

Bit

Bit

Bit

Bit

Bit

Bit

7

6

5

4

3

2

1

0

11010 I

I

I

I

I

I

I ZDS

11011 I

I

I

I

I

I

I

I

II

Count Register

(high)

II

Count Register

(mid)

II

Count Register

(low)

0 0 Timer Status

Register

0 0 (null)

11100 I

I

I

I

I

I

I

I

0 0 (null)

11101 I

I

I

I

I

I

I

I

0 0 (null)

11110 I

I

I

I

I

I

I

I

0 0 (null)

11111 I

I

I

I

I

I

I

I

0 0 (null)

* Unused, read as zero.

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