Zilog Z16C30 Manual de usuario descargar pdf (Pagina 177)

8-22

Z16C30 USC

USER'S MANUAL

ZILOG

UM97USC0100

14 13 12 11 10 9 8 7 6 5 4 3 2 1 015

MIE

Interrupt Control Register (ICR) Register Address 0 0 b 01100

Bit(s)

Field/Bit

Name

Conditions

/Context

Description

Status

Ref Chapter: Section

ICR15

DLC NV

VIS

Rsrvd

IE Op

(WO)

IOP

Misc

MIE 1=enable interrupts from this serial controller

RW 7: Channel Interrupt Options

ICR14 DLC 1=disable Interrupt Enable Out (IEO)

ICR13 NV 1=don't return a vector during /INTACK cycle RW

ICR12-9 VIS 0xxx=interrupt vectors never include status;

100x=interrupt vectors always include status;

1010=vectors include status except for Misc;

1011=vectors include status only for TD, TS,

RD and RS;

1100=vectors include status only for TS, RD,

and RS;

1101=vectors include status only for RD and RS;

1110=vectors include status only for RS;

1111=interrupt vectors never include status

ICR7-6 IE Op 0x=no operation;

10=clear the IE bits selected by 1s in ICR5-0;

11=set the IE bits selected by 1s in ICR5-0

WO 7: Interrupt Enable BitsWrite

ICR5 RS IE 1=Receive Status interrupt enabled RORead

1=set or clear Receive Status IE per IE Op;

0=no change

Write WO

ICR4 RD IE 1=Receive Data interrupt enabled RORead

1=set or clear Receive Data IE per IE Op;

0=no change

Write WO

ICR3 TS IE 1=Transmit Status interrupt enabled RORead

1=set or clear Transmit Status IE per IE Op;

0=no change

Write WO

ICR2 TD IE 1=Transmit Data interrupt enabled RORead

1=set or clear Transmit Data IE per IE Op;

0=no change

Write WO

ICR1 IOP IE 1=I/O Pin interrupt enabled RORead

1=set or clear I/O Pin IE per IE Op;

0=no change

Write WO

ICR0 Misc IE 1=Miscellaneous interrupt enabled RORead

1=set or clear Miscellaneous IE per IE Op;

0=no change

Write WO

RW = Read/Write, RO = Read Only, WO = Write Only – for other codes see p. 8-10.

UM009402-0201

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