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CAM35C44 датащи(PDF) 14 Page - SMSC Corporation

номер детали CAM35C44
подробное описание детали  Infrared Communications Controller Chip CameraFR
PDF  50 Pages
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производитель  SMSC [SMSC Corporation]
домашняя страница  http://www.smsc.com
Logo SMSC - SMSC Corporation

CAM35C44 датащи(HTML) 14 Page - SMSC Corporation

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14
Host Interface Select
The Host Interface Select pins HS[1:0] (TABLE
1) determine the host interface type.
The encoding for these bits is shown in TABLE
3.
The Host Interface Select pins are static
controls and must remain stable during device
operation.
TABLE 3 - HOST INTERFACE ENCODING
HOST INTERFACE
SELECT
HOST INTERFACE TYPE
HS1
HS0
0
0
Reserved
0
1
ISA
1
0
MULTIPLEXED ADDRESS/DATA, Non-ISA
Read/Write (FIGURE 5)
1
1
MULTIPLEXED ADDRESS/DATA,
ISA Read/Write (FIGURE 4)
Host Interface Pin Multiplexing
Pin multiplexing for the processor/host interface
(TABLE 1) is controlled by the Host Interface
Select pins HS[1:0].
ISA
signals
that
are
not
multiplexed,
like
IOCHRDY
and
nNOWS,
remain
operative
regardless of the state of the Host Interface
Select bits.
The following tables describe processor/host
interface multiplexing per pin or per pin group.
System Data Bus
TABLE 4 - SD[7:0] PIN MULTIPLEXING
MUX CONTROLS
PIN NAME
HS1
HS0
SELECTED FUNCTION
SD[7:0]
0
0
NOT DEFINED
0
1
SD[7:0]
1
0
AD[7:0]
1
1
AD[7:0]



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