Digi NS9215 User Manual
Page 167
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S Y S T E M C O N T R O L M O D U L E
Timer 5 Control register
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167
Register bit
assignment
Bits
Access
Mnemonic
Reset
Description
D31:19
N/A
Reserved
N/A
N/A
D18
R/W
Rel mode
0x0
Reload mode
Initializes the timer and the reload value at terminal
count. Reload mode is useful in quadrature decoder
applications, as it allows the reload value to be half
of he terminal count.
0
Use the value in the Reload register
1
Use half the value in the Reload register
D17:16
R/W
TM2
0x0
Timer mode 2
00
Mode as set by timer mode 1
01
Reserved
10
Reserved
11
Quadrature decoder/counter mode
D15
R/W
TE
0x0
Timer enable
0
Timer disabled
1
Timer enabled
D14:12
R/W
Cap Comp
0x0
Capture and compare mode functions
Applicable only when in 16-bit timer mode.
000
Normal operation
001
Compare mode, toggle output on match
010
Compare mode, pulse output on match
011
Capture mode, on input falling edge
100
Capture mode, on input rising edge
101
Capture mode, on every 2
nd
rising edge
110
Capture mode, on every 4
th
rising edge
111
Capture mode, on every 8
th
rising edge
D11
R/W
Debug
0x0
Debug mode
0
Timer enabled in CPU debug mode
1
Timer disabled in CPU debug mode
D10
R/W
Int Clr
0x0
Interrupt clear
Clears the timer interrupt. Software must write a 1,
then a 0 to this location to clear the interrupt.