參數(shù)資料
型號(hào): Z86L71
廠(chǎng)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(yè)數(shù): 37/61頁(yè)
文件大?。?/td> 349K
代理商: Z86L71
Z86L70/71/75/C71
Zilog
IR/Low-Voltage Microcontroller
DS97LVO0500
P R E L I M I N A R Y
1-37
1
To Terminate Ping-Pong Mode
Change Transmit Mode to Normal Mode (CTR1 D2, D3).
Notice that Ping-Pong Mode is not actually stopped until
one of the timer/counter's time-out. Before the actual ter-
mination of Ping-Pong Mode, the user should not change
the value of CTR0 or CTR2, except for resetting the time-
out status bit. Here is an example for terminating Ping-
Pong Mode safely:
or
CTR0,#%20
;reset T8 time-out status bit
loop_a:
tm
jr
Id
or
CTR0,#%20
z,loop_a
CTR1,#00000000b
CTR2,#%20
;wait until T8 times-out
;change to Normal Mode
;reset T16 time-out status bit
loop_b:
tm
jr
CTR2,#%20
z,loop_b
;wait until T16 times-out
;now Ping-Pong Mode is actually
;terminated and user can re-program T8
;and T16
Id
Id
CTR0,#00100000b
CTR2,#00100000b
Figure 28. T8_OUT and T16_OUT in Ping-Pong Mode
TC8H
Enable T8,
T8_OUT Switches
To Its Initial Value
TC16H*256+TC16L
T16_OUT Toggles
T8_OUT
TC8H
TC16H*256+TC16L
T16_OUT
T16_OUT
T16_OUT Switches To Its Initial
Value When TC16 Is Enabled
T8_OUT Toggles
T8_OUT Toggles
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