Sharp CE-150 - Page 314

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3-4. Functions
3-4-1. Operation
1/0 port controller operation
CS2 CS 1 cso RS3 RS2 RS1 RSO R/W Operation
0 1
0 0 0
Resets the d i vid~ r in tl'!rn ally co ntained in th e- 110
POfl Chip .
0
1
0
I I
Heads th e co ntc i ns of the- u fe91ster and sen u1s
thern on the data bus . At th e san l e tir oe . 1ho
t cc civc flag RO is rC -sQ t.
0 I I
0 0
The co ntents of the d ata bus are con •oert ed in to a
ser ial da ta ::;:igna 1 of s tan / d o10 / stop s 1n 1 ct ure. Al
lhft sit me t1r1u~! , the tr (l nsmit l!ag TO is rese t.
0
1 1
0
1
I 1
0 T he co nte nis of l he data bus ar e sio :ed in the f
r o-g ist er .
0
I
T he co n te nt s o1 thc da ta t>u s arc stored in th e
OPC r eg is ter.
I
0 0 0
I
I
The C c) nt en1s of the OPC cegister arc sen! on !he
dala bus .
0
I
Tl)e c;o n1en 1s of th e di:tta bvs ;.ne sto red in th e G
regis ter .
I
0 0
1
1
T he conte nt s o1 !he G regislCf ar c s c1 n on the
C ata bus.
0 T he co nt eni s ol the data b us (lfC sto fcd in the
I
0 1
1'. 'iSK re-g i s1er .
0
I Ttle con ten1s of t he MS K ceg istcr o.tc so n1 on lhc
e1 a1a bus.
0 The c.o n1 en1s <>I 1 he data b ~ J S are sto red" in the IF
fC9 •Stef.
I
0
,
1
1
Tho conten1s ol l he IF r e9 1s1er are s ent on th e data
bus.
0 Tt:c con te nt s ot the da ta bu s af c stored in Ult)
I 1
0 0
OOA reg is ter .
1 The co 1H(' n1s ot tho ODA rogis:or ar·c scot on th e
dato b
vs .
0
l hc cootcnt s of t he da ta bus an~ s10 1ed io t1 1c
1 1
0
0 00 f0£'iS 1Cf .
I
1 T he con te nt s ot the 0 0 9 feg is1 ct ar e se nt on th e
Cata bus.
0 T! H ~ conh?nts OI llH? data bus are s~o r ed Ul Ult?
I 1 1
0
OPA fCgis;ct.
1 T he conten ts of the PA i are sent on the dat a b us .
0
i ' hc co otents or th e d ata bus are s tor ed 1n the
OP8 registef.
I 1
,
1
,
lt l c con1en1s ol th e PB i a re sen1 on the d(-ila b us .
74
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