Z86L71 datasheet(37/61 Pages) ZILOG

номер детали	Z86L71

подробное описание детали	IR/Low-Voltage Microcontroller

PDF	61 Pages

Scroll/Zoom	100%

производитель	ZILOG [Zilog, Inc.]

домашняя страница	http://www.zilog.com

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37 / 61 page

Z86L70/71/75/C71

Zilog

IR/Low-Voltage Microcontroller

DS97LVO0500

P R E L I M I N A R Y

1-37

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:

CTR0,#%20

;reset T8 time-out status bit

loop_a:

CTR0,#%20

z,loop_a

;wait until T8 times-out

CTR1,#00000000b

;change to Normal Mode

CTR2,#%20

;reset T16 time-out status bit

loop_b:

CTR2,#%20

z,loop_b

;wait until T16 times-out

;now Ping-Pong Mode is actually

CTR0,#00100000b

;terminated and user can re-program T8

CTR2,#00100000b

;and T16

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 Switches To Its Initial

Value When TC16 Is Enabled

T8_OUT Toggles

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