
Application Note
Interfacing the ISCC™ to the 68000 and 8086
16-8
APPLICATIONS EXAMPLES
(Continued)
Figure 4. ISCC Interface to an Intel 8086 Microprocessor
RDY Timing
Synchronizer
BUS Arbitration and Timing
Synchronization
System
Address
Bus Upper
Order Bits
RESET
ALE
HOLD
*/RD//GT or
/INTR
/INTA
RDY
/RESET
/RD
/WR
/AS
AD15-AD0
A1/A/B
/CS
/UAS
/INT
/INTACK
WAIT/RDY
A0/SCC/DMA
Latch
DQ
Latch
D
Q
Chip
Select
Decode
Vcc
Vcc
/RD
/WR
AD15-AD0
A19-A16
HLDA
/BUSREQ
/BUSACK
System Address
Bus Lower
Order Bits
Latch
DQ
/BHE
A0
* maximum mode
808
16C3
/DS
R/W
/OE
/OE
A7
A6
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