Cypress S6J3200 Series, Manual

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CHAPTER 29:Indicator PWM
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 1091
1.
Overview
The indicator PWM (Pulse Width Modulation) is an output timer that consists of a 16-bit down counter, a
16-bit data register for cycle setting, a 16-bit compare register for duty setting, and a pin controller.
Compared to other output timers, it is capable of output of waveforms with relatively long cycles. Output
operation is also supported while in standby mode.
The 16-bit down counter clock can be selected from among six 6 types of clocks (divided by 1, 16, 64,
256, 1024, 2048).
For the count operation, an underload reloads from the PWM cycle register and the count is repeated.
Indicator PWM timer activation is by software trigger only.
2.
Configuration and Block Diagram
Figure 2 -1 Block Diagram of the Indicator PWM Timer
16-bit
Down counter
Underflow
Count
clock
/
16
16
/
Load
OSEL
Inversion control
Match detection
STRG
DTIE
UDIE
PMSK
Interrupt
Factor
generation
Toggle
generation
IPDUT
/
16
IPCSR
Load
Count
enable
2
0
:
2
11
/
3
CKS
Main clock
oscillation
Waveform
output
Underflow/Duty
Match interrupt
request
IPCSR : Cycle setting register
IPDUT : Duty setting register
IRQ_IND
CTEN
DOP
IPDUTwriting
IPCSR writing
INDICATOR
OUT