Z86L972 Datasheet, PDF (80/91 Pages) Zilog, Inc. – Low-Voltage Microcontrollers

Z86L972/Z86L973/Z86L974
Low-Voltage Microcontrollers
73
T16 Control Register (CTR2)
The T16 Control Register, known as CTR2, controls the operation of the 16-bit T₁₆
timer (see Table 43).
Table 43. CTR2 Register (Group/Bank 0Dh, Register 2)
Bit
7
6
5
Bit/Field
Single/
T16_ Mod- Time_
Enable ulo-n Out
R/W
R/W R/W R/W
Reset
0
0
0
R = Read, W = Write, X = Indeterminate
Bit
Position Bit/Field
R/W
7_______ T₁₆ Enable
R
R
W
W
_6______ Single/
R/W
Modulo-n
__5_____ Time_Out
R
R
W
W
___43___ T₁₆ Clock
R/W
_____2__
______1_
_______0
Capture Interrupt R/W
Mask
Counter Interrupt R/W
Mask
P41_Out
R/W
4
3
T16_Clock
R/W R/W
0
0
2
1
0
Capture Counter
INT_ INT_ P41_
Mask Mask Out
R/W R/W R/W
0
0
0
Value
1
0
1
0
1
0
1
0
1
0
1
0
11
10
01
00
1
0
1
0
1
0
Description
Counter Enabled
Counter Disabled
Enable Counter
Stop Counter
In Transmit Mode:
Single Pass
Modulo-n
In Demodulation Mode:
T₁₆ Does Not Recognize Edge
T₁₆ Recognizes Edge
Counter Timeout Occurred
No Counter Timeout
Reset Flag to 0
No Effect
SCLK/8
SCLK/4
SCLK/2
SCLK
Enable Data Capture Interrupt
Disable Data Capture Interrupt
Enable Time_Out Interrupt
Disable Time_Out Interrupt
P41 configured as T₁₆ Output
P41 configured as I/O
PS010504-1002
PRELIMINARY