SSI , , , . . 6.43. SSI S, SCI.
A (CRA). CRA - 16- SSI. SSI , .
(7-0 - 0-7).
7-0 SSI. 1 256. SCK / SCO. . , 2,048 , 1,544 , 1,536 . 7-0.
(DC4-DC0 - 8-12).
DC4-DC0 . . . 1 32 2 32 . DC4 - DC0.
(WLO, WL1 - 13 14).
WLO, WL1 SSI. . 6.29. , . , FSLO FSL1 WL. WLO, WL1.
(PSR - 15).
PSR . , . PSR , . , ; , 8192. PSR.
(CRB). 16- SSI. SC2, SC1 SCO, , . CRB. CRB . CRB , . . CRB.
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0 (OF0 - 0).
SSI SCD0 = 1, SCO , OF0 SCO . OF0.
0 (OF1 - 1).
SSI SCD1 = 1, SC1 OF0 SCO . OF1.
0 (SCDO - 2).
/ SCO. SCDO = 0, SCO - ; SCDO = 1, SCO - . SCDO.
0 (SCD1 - 3).
/ SC1. SCD1 = , SC1 - ; SCD1 = 1, SC1 - . SCD1.
0 (SCD2 - 4).
/ SC2. SCD2 = , SC2 - ; SCD2 = 1, SC2 - . SCD2.
(SCKD - 5).
. SCKD = 1, SCK, - SCK . SCKD.
(SHFD - 6).
, , SHFD = 0, , , SHFD = 1. SHFD.
(FSLO, FSL1 - 7 8).
. FSL1 = 0 FSLO = 0, RX, WL1 WL0. FSL1 = 1 FSLO = 0, 1- RX. FSLO = 1, RX (1- WL RX). FSL1 FSLO.
/ (SYN- 9).
. SYN = 0, , . SYN = 1, , . SYN.
(GCK- 10).
, . , , - . GCK.
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(MOD - 11).
SSI. , , , . : . . MOD.
(- 12).
. , . , . , , , (. . , , ). - : TSR ; : TIE , TDE . . STD . .
(RE- 13).
, . , RX. , , .
RE 1 . RE , . RE.
(TIE- 14).
DSP , TIE TDE
1. TIE , . TDE , , . TSR . TIE.
:
1) TIE = 1, TDE = 1, TUE = 1;
2) TIE = 1, TDE = 1, TUE = 0.
(RIE - 15).
RIE , DSP , RDF . RIE = 0, . RDF . RDF . RIE.
;
1) ( : RIE = 1,
RDF=1, ROE=1);
2) ( : RIE = 1,
RDF = 1, ROE = 0.
(SSISR). 8- , , SSI. , .
0 (IF0- 0).
SSI , SCO 1- . 0 , . IF0 , SCD0 = 0 SYN = 1, . e. SCO . IF0 . , STOP IF0.
1 (IF1 - 1).
SSI , SCO 1- . 1 , . IF1 , SCD1 = 0 SYN = 1, . . SC1 . IF1 . , STOP IF1.
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(TFS - 2).
TFS = 1, , . TFS . , TFS = 1, ( ) . TFS . , STOP TFS.
(RFS 3).
RFS = 1, , ( ). RFS = 0 ( ), , . , STOP RFS.
(TUE- 4).
TUE = 1, ( ) . , , . . 32 . TUE , . , TUE = 1, . , TUE = 0, . , STOP TUE. .
(ROE 5).
ROE = 1, (RX), . .
ROE , ROE , . , ROE = 1, . , ROE = 0, . , STOP ROE. .
(TDE- 6).
1, . ( , TSR). , STOP TDE. , TDE , TSR. TDE TSR . TIE = 1, .
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(RDF- 7).
1, . RDF , , STOP. RIE = 1, .
. 24- . , . , MSB, SHFD = 0, LSB, SHFD = 1. , , CRA.
(RX). 24- . , . . .
. 24- . , . , , CRA. , . , , SHFD = 0, , SHFD = 1.
(). 24- . . , .
(TSR). , . , TSR , , .