dp8344b National Semiconductor Corporation, dp8344b Datasheet - Page 184

• Manufacturer Part Number: dp8344b
• Description: Biphase Communications Processor?bcp
• Manufacturer: National Semiconductor Corporation

6 0 Reference Section
TT AR Transmission Turn-around
acknowledgement by the terminal or other slave device that
a write command has successfully been received or that a
POLL command status response is all zero
twin-ax (1) The shielded pair cable that is used in a 5250
communications systems (2) Sometimes used to refer to
the IBM 5250 communications protocol itself
Physical Dimensions
National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION As used herein
1 Life support devices or systems are devices or
systems which (a) are intended for surgical implant
into the body or (b) support or sustain life and whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling can
be reasonably expected to result in a significant injury
to the user
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NS Package Number V84A
Order Number DP8344B
49) 0-180-530 85 86
49) 0-180-530 85 85
49) 0-180-532 78 32
49) 0-180-532 93 58
49) 0-180-534 16 80
Plastic Chip Carrier (V)
2 A critical component is any component of a life
unmask Enable the accepting of an interrupt by the CPU
wait state Additional T-states that may be added to a
memory access to increase the time from address genera-
tion to the beginning of either a memory read or write The
BCP may add as many as seven data wait states and three
instruction wait states
X-TCLK The eXternal Transceiver CLocK An indepen-
dent clock source that the BCP transceiver operation may
synchronize to rather than from OCLK
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system or to affect its safety or
effectiveness
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