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MAQ3693NB View Datasheet(PDF) - Dynex Semiconductor

Part NameDescriptionManufacturer
MAQ3693NB 1553B Bus Controller/Remote Terminal Dynex
Dynex Semiconductor Dynex
MAQ3693NB Datasheet PDF : 41 Pages
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MA3690/1/3
STATENN
INCMDN
DBCACC
G
OE
B0
SSERR
B1
SERVREQ
B2
ILLEGAL COMMANDS
B3
ALLOW CODE
B4
RES0
B5
RES1
B6
RES2
B7
TRANSPARENT
LATCH
DBACC - Dynamic Bus Acceptance. If low then the Dynamic
Acceptance bit of the terminal status word will be set in
response to a legal Mode Command for Dynamic Bus Control
allocation. After switching to the BC mode of operation the
first instruction must be a NOOP.
SSERR - A low will cause the Subsystem flag to be set in the
terminal status word.
SERVREQ - A low will set the service request bit of the
terminal status word.
ILLEGAL COMMAND - Allows the subsystem to declare any
command word illegal. When low the terminal will inhibit data
transfers to or from the subsystem, and after message
validation will respond with the message error bit set in the
terminal status word.
ALLOW CODE - Provides the subsystem with the capability
to declare any of the reserved mode codes as being
meaningful. If a reserved mode code is received when high
the command is treated as illegal and after message
validation responds with ME bit set in the terminal status
word. If low the most significant bit of the mode code and the
T/R bit determine whether any data words are involved and
their direction.
RES0, RES1, RES2 - Provides the subsystem the capability
of setting any of the currently reserved bits of the terminal
status word.
Figure 5: Subsystem Status Latch
Figure 6: Remote Terminal Subsystem Interface Signal Transfer
13/41
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