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IA80C152

Preliminary Data Sheet

UNIVERSAL COMMUNICATIONS CONTROLLER

Copyright

© 2000

[_________The End of Obsolescence

™

Table 4 - SFR Summary

Item

Register

Name

Register

Address

Functional

Block

Description

Initial

Value

52.

TFIFO

085h

GSC

Transmit FIFO

X

53.

TH0

08Ch

C8051

Timer (High) 0

00h

54.

TH1

08Dh

C8051

Timer (High) 1

00h

55.

TL0

08Ah

C8051

Timer (Low) 0

00h

56.

TL1

08Bh

C8051

Timer (Low) 1

00h

57.

TMOD

089h

C8051

Timer Mode

00h

58.

TSTAT

0D8h

GSC

Transmit Status

XX000100b

Table 5 - Interrupt Summary

Interrupt

Priority

Interrupt

Name

Priority

Symbol

Name

Enable

Symbol

Name

Priority

Address

Enable

Address

Vector

Address

-

Enable All Interrupts

-

EA

-

0AFh

-

1

External Interrupt 0

PX0

EX0

0B8h

0A8h

03h

2

GSC Receive Valid

PGSRV

EGSRV

0F8h

0C8h

2Bh

3

Timer 0 Overflow

PT0

ET0

0B9h

0A9h

0Bh

4

GSC Receive Error

PGSRE

EGSRE

0F9h

0C9h

33h

5

DMA Channel 0 Done

PDMA0

EDMA0

0FAh

0CAh

3Bh

6

External Interrupt 1

PX1

EX1

0BAh

0AAh

13h

7

GSC Transmit Valid

PGSTV

EGSTV

0FBh

0CBh

43h

8

DMA Channel 1 Done

PDMA1

EDMA1

0FCh

0CCh

53h

9

Timer 1 Overflow

PT1

ET1

0BBh

0ABh

1Bh

10

GSC Transmit Error

PGSRE

EGSRE

0FDh

0CDh

4Bh

11

UART Transmit/Receive

PS

ES

0BCh

0ACh

23h

Power Conservation Modes

There are 2 power conservation modes identified as Idle Mode and Power Down Mode. The

IA80C152 pins will have values according to the Table 6 below.

Idle Mode is entered through software control of the PCON register. Idle halts processor

execution and the DMA. The GSC continue to operate to the extent that it can without the

processor or DMA servicing its requests. Idle mode is exited upon receipt of any enabled interrupt

or invoking a hardware reset.

Power Down Mode is entered through software control of the PCON register. Power Down

disables the oscillator causing all functions to stop. RAM data is maintained since power is not

removed from the device. The only way to exit power down mode is to invoke a hardware reset.