Fujitsu 8FX User Manual

MB95630H Series
MN702-00009-2v0-E FUJITSU SEMICONDUCTOR LIMITED 335
CHAPTER 19 16-BIT PPG TIMER
19.2 Configuration
19.2 Configuration
This section describes the configuration of the 16-bit PPG timer.
The number of pins and that of channels of the 16-bit PPG vary among products. For details,
refer to the device data sheet.
In this chapter, "n" represents the channel number.
For details of pin names, register names and
register abbreviations of a product, refer to the device data sheet.
■ Block Diagram of 16-bit PPG Timer
Figure 19.2-1 Block Diagram of 16-bit PPG Timer
● Count clock selector
The clock for the countdown of 16-bit downcounter is selected from eight types of internal
count clocks.
● 16 bit downcounter
It counts down with the count clock selected with the count clock selector.
CLK
LOAD
START
BORROW
16-bit
downcounter
S
Q
R
Interrupt
selection
Prescaler
MDSE PGMS OSEL
POEN
Pin
Interrupt
of 16-bit PPG
IRS1IRS0 IRQF
IREN
16-bit PPG downcounter register ch. n
Internal data bus
STOP
Edge
detection
STRG CNTE RTRG
POEN
1 0
16-bit PPG cycle
setting buffer register
(upper 8 bits) ch. n
16-bit PPG cycle
setting buffer register
(lower 8 bits) ch. n
16-bit PPG cycle setting
buffer register ch. n
upper 8 bits buffer
16-bit PPG duty
setting buffer register
(lower 8 bits) ch. n
16-bit PPG duty
setting buffer register
(upper 8 bits) ch. n
16-bit PPG duty
setting buffer register ch. n
for lower 8 bits buffer
16-bit PPG duty
setting buffer register ch. n
for upper 8 bits buffer
PPGn
When upper 8 bits of duty
setting register are written
but lower 8 bits are not
written, the value is "1",
otherwise it is "0".
EGS1EGS0
Lower 8 bits
Comparator
circuit
Pin
TRGn
CKS02 CKS01
CKS00
1 MCLK
MCLK/2
MCLK/4
MCLK/8
MCLK/16
MCLK/32
F
CH/2
7
or FCRH/2
6
or F
MCRPLL/2
6
FCH/2
8
or F
CRH/2
7
or F
MCRPLL/2
7

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English