Z86L81 Datasheet, PDF (40/88 Pages) Maxim Integrated Products – 28-Pin Low-Voltage Infrared Microcontrollers

Z86L81/86/98
28-Pin Low-Voltage Infrared Microcontrollers
34
measure ensures 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 is set to the opposite state of this bit. This measure
ensures that when the clock is enabled, a transition occurs 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
causes unpredictable output from T8/16_OUT.
CTR2 Counter/Timer 16 Control Register
Table 12 lists and briefly describes the fields for this register.
Table 12. CTR2 (D)02h: Counter/Timer16 Control Register
Field
T16_Enable
Single/Modulo-N
Bit Position
7-------
-6------
Value
R
0*
1
W
0
1
R/W
0
1
0
1
Time_Out
--5-----
R
0
1
W
0
1
Description
Counter Disabled
Counter Enabled
Stop Counter
Enable Counter
Transmit Mode
Modulo-N
Single Pass
Demodulation Mode
T16 Recognizes Edge
T16 Does Not
Recognize Edge
No Counter Timeout
Counter Timeout
Occurred
No Effect
Reset Flag to 0
19-4615; Rev 0; 4/09