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CIRCC датащи(PDF) 22 Page - SMSC Corporation

номер детали CIRCC
подробное описание детали  Consumer Infrared Communications Controller
PDF  70 Pages
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производитель  SMSC [SMSC Corporation]
домашняя страница  http://www.smsc.com
Logo SMSC - SMSC Corporation

CIRCC датащи(HTML) 22 Page - SMSC Corporation

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REGISTERS
The CIrCC is partially enabled through binary
controls found in two 8-byte register banks. The
banks, the ACE550 UART Controls and the SCE
Controls, are selected with the nACE and nSCE
register-bank
selector
inputs
found
in
the
Interface Description.
If nACE is zero, the three least significant bits of
the Host Address Bus decode the 16C550A
UART control registers.
If nSCE is zero, the
SCE control bank is addressed. All of the CIrCC
registers are 8 bits wide.
ACE UART CONTROLS
The table below (Table 12) lists the ACE UART
Control Registers.
See the current SMSC
16C550A
implementation
for
a
complete
description.
Table 12 - 16C550A UART Addressing
DLAB
A2
A1
A0
DIRECTION
REGISTER NAME
0
0
0
0
Read
Receive Buffer
0
0
0
0
Write
Transmit Buffer
0
0
0
1
Read/Write
Interrupt Enable
X
0
1
0
Read
Interrupt Identification
X
0
1
0
Write
FIFO Control
X
0
1
1
Read/Write
Line Control
X
1
0
0
Read/Write
Modem Control
X
1
0
1
Read/Write
Line Status
X
1
1
0
Read/Write
Modem Status
X
1
1
1
Read/Write
Scratchpad
1
0
0
0
Read/Write
Divisor (LSB)
1
0
0
1
Read/Write
Divisor (MSB)



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