Sharp CE-158 Instrukcja Użytkownika Pobierz pdf (Strona 19)

and more about Sharp PC-1500

http://www.PC-1500.info

RECEIVER

CLOCK

(RC

CK)

put with a frequen

16 t

the

de·

red receiver shift rate.

TPB

pos

ive

inJ)U

used

ta l

oad

or reset

be.

DATA

AVAI

LE(DA)

A l

·le

vcl

ltage at this output ind

ica

tes

tat an entire c

ract

has been received and t

rans

rred

to the

•er Holdi

SERIAL

DATA

IN (SDI):

Serial

data r

-cce

ved

on th

input

ne enters the Recei

ift R

egi

ster at a point detennined by

e c

ter length. A hi

leve

l input volta

mus

t be present

whe

n data is not

ing

ceived.

CLEAR (C

LEAiR)

A l

eve

l vol

tage

this input

res

ets

1e I

errupt F

p.Flop,

ceiver Holding

Regis

ter, Control

egis

ter,

ancl

gister, and sets SERIAL

DATA

OUT

(SDO) hi

NSMITTER

DING

EGI

STER

EMPTY

(THRE):

A low.le

ltage

is output indicates that

Transmitter

Hol

Regist

nsferred its

contents

the Tran

itter

ift

gis

ter and

may

loa

d with a new characte

ELEC

(CS!):

gh·l

eve

l voltage at tllis input

toge

wit.

CS2

and

CS3

lects the UART.

REQ

UEST

TO S

END

(RTS):

Tltis

output si

gna

lls

the peripheral to to

t ready to recei

data. CLEAR TO SE

TS) is

the

res

ponse

from

the pe

pheral. RTS

set to a low

·l

ltage

whe

n data

latched in the Tra

ns·

lter

ing

gister or TR

t high, and

set high when both tbe Transrnitter Holding

Shift R

egis

ter a

pty and

is l

DATA

OUT

The contents of the Transmitter

Reg;s

1er

(start bit, data bits, parity bit, and stop

t(s) are

ser

y shifted out

this output.

cha

cter is be

ing

transmitted, at high l

evel

mai

n·

ncd. Start of transmi

ion is defined

tlle trans

ion

the start

t from a

h.l

vel

to a

low

vel

oulpul voll

TRA

SMITTE

BUS

(T B

0 · T

BUS

nsmi

tter pa

llel

data inpu

ese may be externa

y connected to

rrespond

Recei

low

Jcvel

volta

this inp

gates data

tra

nsmitter

s to

the

Transmitter

ldin

ster or

the

Con

ol R

egis

ter as chosen

registe

sele

A hi

gh-l

eve

l vohage

data from

iver

Holding Register or the S

s Register,

chosen by re

gist

lect, 10 the

rece

bus.

IP SELE

(CS3

)

With hig

h·

levcl

at this input together w

I and

CS2

lects the

RT.

IPH

L ST

US INTERRUPT (

PSI

·t

O·l

transition on this input line ·sets a bit in the Status Re

gis

ter and cau

ses

INT

R·

ROPT

(INT

= lo

TERNAL ST

US (ES):

A low.J

cvc

l voltage at tllis input sets a bit in the Status R

egi

ster.

LEAR

SEND (C

When

is input from peripheral is hi

ansfer of a character

the T

nsmitter Shiirt Register

and

shi

tin

dala on\ is i

ibited.

NSM

TTE!R

(TCLO

CK):

Clock input

th a

equen

mes

the

desired transmi

er shift rate.

not sale this PDF!!!

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 35 36

Komentarze do niniejszej Instrukcji

Brak uwag

Sharp CE-158 Instrukcja Użytkownika Strona 19

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Nie Sharp CE-158