z86d73 ZiLOG Semiconductor, z86d73 Datasheet - Page 42

• Manufacturer Part Number: z86d73
• Description: 40/44/48-pin Low-voltage
• Manufacturer: ZiLOG Semiconductor

PS019402-1103
Caution:
Note:
Single/Modulo-N
When set to 0 (modulo-n), the counter reloads the initial value when the terminal
count is reached. When set to 1 (single pass), the counter stops when the terminal
count is reached.
Timeout
This bit is set when T8 times out (terminal count reached). To reset this bit, a 1
should be written to its location.
Example
When the status of bit 5 is 1, a timer reset condition occurs.
T8 Clock
This bit defines the frequency of the input signal to T8.
Capture_INT_Mask
Set this bit to allow an interrupt when data is captured into either LO8 or HI8 upon
a positive or negative edge detection in demodulation mode.
Counter_INT_Mask
Set this bit to allow an interrupt when T8 has a timeout.
P34_Out
This bit defines whether P34 is used as a normal output pin or the T8 output.
Care must be taken when using the OR or AND commands to manipulate
CTR0, bit 5 and CTR1, bits 0 and 1 (Demodulation Mode). These
instructions use a Read-Modify-Write sequence in which the current status
from the CTR0 and CTR1 registers is ORed or ANDed with the designated
value and then written back into the registers.
Writing a 1 is the only way to reset the Terminal Count status condition.
Therefore, reset this bit before using/enabling the counter/timers.
The first clock of T8 might not have complete clock width and can
occur any time when enabled.
P
R
E
L
I
M
I
N
A
40/44/48-Pin Low-Voltage IR OTP
R
Y
Z86D73
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