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PC16550D Fiches technique(PDF) 13 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce PC16550D
Description  PC16550D Universal Asynchronous Receiver/Transmitter with FIFOs
PDF  22 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC16550D Fiches technique(HTML) 13 Page - National Semiconductor (TI)

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70
Connection Diagrams (Continued)
TQFP Package
TLC8652 – 26
Order Number PC16550DVEF
See NS Package Number VEF44A
Chip Carrier Package
TLC8652 – 18
Top View
Order Number PC16550DV
See NS Package Number V44A
TABLE I UART Reset Configuration
RegisterSignal
Reset Control
Reset State
Interrupt Enable Register
Master Reset
0000
0000
(Note 1)
Interrupt Identification Register
Master Reset
0000
0001
FIFO Control
Master Reset
0000
0000
Line Control Register
Master Reset
0000
0000
MODEM Control Register
Master Reset
0000
0000
Line Status Register
Master Reset
0110
0000
MODEM Status Register
Master Reset
XXXX
0000
(Note 2)
SOUT
Master Reset
High
INTR (RCVR Errs)
Read LSRMR
Low
INTR (RCVR Data Ready)
Read RBRMR
Low
INTR (THRE)
Read IIRWrite THRMR
Low
INTR (Modem Status Changes)
Read MSRMR
Low
OUT 2
Master Reset
High
RTS
Master Reset
High
DTR
Master Reset
High
OUT 1
Master Reset
High
RCVR FIFO
MRFCR1
FCR0 DFCR0
All Bits Low
XMIT FIFO
MRFCR1
FCR0 DFCR0
All Bits Low
Note 1
Boldface bits are permanently low
Note 2
Bits 7–4 are driven by the input signals
13



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