dp8344b National Semiconductor Corporation, dp8344b Datasheet - Page 170
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dp8344b
Manufacturer Part Number
dp8344b
Description
Biphase Communications Processor?bcp
Manufacturer
National Semiconductor Corporation
Datasheet
1.DP8344B.pdf
(184 pages)
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Manufacturer:
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6 0 Reference Section
RTR RECEIVE TRANSMIT REGISTER
RTF7 – 0
Alternate R4 read write
RTF7 RTF6 RTF5 RTF4 RTF3 RTF2 RTF1 RTF0
7
6
Receive Transmit FIFO’s
port to the least significant eight bits of receive
and transmit FIFO’s
on moves into RTR
0 are popped from receiver FIFO on moves
out of RTR
Transceiver
RTF7 – 0 are pushed onto the transmit FIFO
5
4
Further information Section 3 0
3
OWP
RF10 – 8 and RTF7 –
(Continued)
2
TF10 – 8 and
Input output
1
0
170
TCR TRANSCEIVER COMMAND REGISTER
RLQ
SEC
SLR
ATA
OWP
TF10 – 8
Alternate R6 read write
RLQ
7
SEC
6
Receive Line Quiesce
line quiesce bits the receiver looks for
Select Error Codes
switched into RTR location
Select Line Receiver
input source
Advance Transmitter Active
TX-ACT is advanced one half bit time so that
the transmitter can generate 5 5 line quiesce
pulses
Odd Word Parity
word parity
Transmit FIFO
moves into RTR
Further information Section 3 0 Transceiver
RTF7 – 0 are pushed onto transmit FIFO on
SLR
5
SLR
OWP
RLQ
0
1
0
1
0
1
ATA
4
DATA-IN
On-chip analog
line receiver
Word Parity
Even
Odd
Number of
Quiesces
Source
OWP
3
2
3
OWP
When high ECR is
Controls transmitter
TF10
Selects the receiver
2
Selects number of
TF10 – 8 and
TF9
When high
1
TF8
0
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