參數(shù)資料
型號(hào): XR16L788
廠商: Exar Corporation
英文描述: HIGH PERFORMANCE OCTAL UART
中文描述: 高性能八進(jìn)制的UART
文件頁(yè)數(shù): 17/42頁(yè)
文件大?。?/td> 557K
代理商: XR16L788
XR16L788 OCTAL UART
á
REV. 1.1.4
17
4.5
UART CHANNEL CONFIGURATION REGIS-
TERS AND ADDRESS DECODING.
The 8 sets of UART configuration registers are de-
coded using address lines A4 to A7 as show below.
Address lines A0 to A3 select the 16 registers in each
channel.
The first 8 registers are 16550 compatible with EXAR
enhanced feature registers located on the upper 8
addresses.
F
IGURE
10. I
NTERNAL
L
OOP
B
ACK
TX [7:0]
RX [7:0]
M
L
I
RTS# [7:0]
MCR bit-4=1
VCC
VCC
VCC
Transmit Shift
Register
Receive Shift
Register
CTS# [7:0]
DTR# [7:0]
DSR# [7:0]
RI# [7:0]
CD# [7:0]
OP1#
OP2#
RTS#
CTS#
DTR#
DSR#
RI#
CD#
A7
A6
A5
A4
UART
C
HANNEL
S
ELECTION
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
7
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