參數(shù)資料
型號(hào): L8708H
廠商: ZiLOG, Inc.
英文描述: IR/Low-Voltage Microcontroller
中文描述: 紅外/低電壓微控制器
文件頁數(shù): 33/66頁
文件大?。?/td> 599K
代理商: L8708H
Z86L88/81/86/87/89/73
IR/Low-Voltage Microcontroller
DS96LV00800
P R E L I M I N A R Y
33
1
CTR1 Register Description
Mode.
If it is 0, the Counter/Timers are in the transmit
mode, otherwise they are in the demodulation mode.
P36_Out/Demodulator_Input.
In Transmit Mode, this bit
defines whether P36 is used as a normal output pin or the
combined output of T8 and T16.
In Demodulation Mode, this bit defines whether the input
signal to the Counter/Timers is from P20 or P31.
T8/T16_Logic/Edge _Detect.
In Transmit Mode, this field
defines how the outputs of T8 and T16 are combined
(AND, OR, NOR, NAND).
In Demodulation Mode, this field defines which edge
should be detected by the edge detector.
Transmit_Submode/Glitch Filter
.
In Transmit Mode, this
field defines whether T8 and T16 are in the "Ping-Pong"
mode or in independent normal operation mode. Setting
this field to "Normal Operation Mode" terminates the "Ping-
Pong Mode" operation. When set to 10, T16 is immediate-
ly forced to a 0; a setting of 11 will force T16 to output a 1.
In Demodulation Mode, this field defines the width of the
glitch that should be filtered out.
Initial_T8_Out/Rising_Edge.
In Transmit Mode, if 0, the
output of T8 is set to 0 when it starts to count. If 1, the out-
put of T8 is set to 1 when it starts to count. When The
counter is not enabled and this bit is set to 1 or 0, T8_OUT
will be set to the opposite state of this bit. This insures that
when the clock is enabled a transition occurs to the initial
state set by CTR1, D1.
In Demodulation Mode, this bit is set to 1 when a rising
edge is detected in the input signal. In order to reset it, a 1
should be written to this location.
Initial_T16 Out/Falling _Edge
.
In Transmit Mode, if it is 0,
the output of T16 is set to 0 when it starts to count. If it is
1, the output of T16 is set to 1 when it starts to count. This
bit is effective only in Normal or Ping-Pong Mode (CTR1,
D3, D2). When the counter is not enabled and this bit is
set, T16_OUT will be set to the opposite state of this bit.
This insures that when the clock is enabled a transition oc-
curs to the initial state set by CTR1, D0.
In Demodulation Mode, this bit is set to 1 when a falling
edge is detected in the input signal. In order to reset it, a 1
should be written to this location.
Note:
Modifying CTR1, (D1 or D0) while the counters are
enabled will cause un-predictable output from T8/16_OUT.
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