参数资料
型号: XR82C684CJ-F
厂商: Exar Corporation
文件页数: 72/107页
文件大小: 0K
描述: IC UART CMOS QUAD 68PLCC
标准包装: 19
特点: *
通道数: 4,QUART
FIFO's: 3 字节
电源电压: 5V
安装类型: 表面贴装
封装/外壳: 68-LCC(J 形引线)
供应商设备封装: 68-PLCC
包装: 管件
其它名称: 1016-1326-5
XR82C684
.B
E %**(" % (& "%%( # "
% / K '1 * (& "%%(
9 E( 00.
(% % %% '( %( ( *
9 6% Table 14 Table 15
Example B: Programming the Bit Rate via the
Counter/Timer
% % 3(%% %( '(
.9 6% ( ) Please note that this particular
bit rate is not offered by the BRG. In this case the user can
do the following.
!( @ ;J < %(, ( 8-<= (# 3(
8 ( (% * * (,
E( . . <
(% %% % % ( - D ,(, %I 3 *
*I'& L @ ;J-PQ L ;J
4 E( P.7@Q
(% 3( % -D ( ( # % '
((, % ' * - 8-<= (
@ E( !!. )
(% 3( %'(*& ((, % ' * '(
%( * ) 3( ( * -D
Please note that when the QUART is programmed in this
configuration, the C/T output represents a 16X over
sample of the Transmitted and Received data. Therefore,
the chip circuitry will divide the 1 MHz square wave by 16,
just like for clock signals originating from the BRG.
Thus: Bit Rate = 1 MHz/16 = 62.5 kbps.
Example C: Using the External Input Ports
% # ( (( (, ) .9
6% % 5" )# -% 3% %(
'( % (
% % * * %% % (
5" )# , 3( * 3(,7
E( """"""
+ +
*(,( ,(%
(% % 3% ;J %I 3 * -D
+4
Note: x = don’t care
%**(" % (& "%%(
5" & ' ' +4 ( $+4 $+@ (%
& &(, ;J %I 3 ( % 3
( (%
4 E( .
(% % 3( %'(*& ((, % ' *
%( '( * 3( (
* ( (% $+4 $+@# %'( & (( &#
(% % 3 3 %
% ( %(, 8 %(, % ;'# (%
((%( &. * (% %(, * # ( *
(% %
Please note that if the user were to apply this example,
he/she would be responsible for ensuring that the
incoming serial data stream is synchronous with the 1
MHz (1X) clock signal; in order to minimize bit errors.
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