Z85230 Datasheet, PDF (42/120 Pages) Zilog, Inc. – ENHANCED SERIAL COMMUNICATIONS CONTROLLER

==
(QKDQFHG 6HULDO &RPPXQLFDWLRQV &RQWUROOHU

:5 FRQWUROV ZKLFK ELWV DUH GHFRGHG WR IRUP WKH UHJLVWHU DGGUHVV 7KLV ELW LV
SODFHG LQ WKLV UHJLVWHU WR VLPSOLI\ SURJUDPPLQJ ZKHQ WKH FXUUHQW VWDWH RI WKH 6KLIW
ULJKW6KLIW /HIW ELW LV QRW NQRZQ
$ KDUGZDUH UHVHW IRUFHV 6KLIW /HIW PRGH ZKHUH WKH DGGUHVV LV GHFRGHG IURP $'±
$' ,Q 6KLIW 5LJKW PRGH WKH DGGUHVV LV GHFRGHG IURP $'±$' 7KH 6KLIW 5LJKW
6KLIW /HIW ELW LV ZULWWHQ XVLQJ D FRPPDQG WR PDNH WKH VRIWZDUH ZULWLQJ WR :5
LQGHSHQGHQW RI WKH VWDWH RI WKH 6KLIW 5LJKW6KLIW /HIW ELW
:KLOH LQ WKH 6KLIW /HIW PRGH WKH UHJLVWHU DGGUHVV LV SODFHG RQ $'±$' DQG WKH
&KDQQHO 6HOHFW ELW $% LV GHFRGHG IURP $' ,Q 6KLIW 5LJKW PRGH WKH UHJLVWHU
DGGUHVV LV DJDLQ SODFHG RQ $'±$' EXW WKH &KDQQHO 6HOHFW $% LV GHFRGHG IURP
$'
%HFDXVH WKH = GRHV QRW FRQWDLQ  UHDG UHJLVWHUV WKH GHFRGLQJ RI WKH UHDG
UHJLVWHUV LV QRW FRPSOHWH WKLV VWDWH LV LQGLFDWHG LQ 7DEOHV  DQG  E\ SDUHQWKHVHV
DURXQG WKH UHJLVWHU QDPH 7KHVH DGGUHVVHV PD\ DOVR EH XVHG WR DFFHVV WKH UHDG
UHJLVWHUV 7KH = FRQWDLQV RQO\ RQH :5 DQG :5 WKHVH UHJLVWHUV PD\ EH
ZULWWHQ IURP HLWKHU FKDQQHO
6KLIW /HIW PRGH LV XVHG ZKHQ &KDQQHO $ DQG % DUH SURJUDPPHG GLIIHUHQWO\ 8VLQJ
6KLIW /HIW PRGH DOORZV WKH VRIWZDUH WR VHTXHQFH WKURXJK WKH UHJLVWHUV RI RQH
FKDQQHO DW D WLPH 7KH 6KLIW 5LJKW PRGH LV XVHG ZKHQ WKH FKDQQHOV DUH SUR
JUDPPHG WKH VDPH %\ LQFUHPHQWLQJ WKH DGGUHVV WKH XVHU FDQ SURJUDP WKH VDPH
GDWD YDOXH LQWR ERWK WKH &KDQQHO $ DQG &KDQQHO % UHJLVWHU
7DEOH  SURYLGHV GHWDLOV RI WKH =; 5HJLVWHU 0DS LQ 6KLIW /HIW 0RGH
36
3URJUDPPLQJ