EM78P258N
8-Bit Microprocessor with OTP ROM
The following figure shows LGP=1 and HF=1. When this bit is set to high level, the
high-time segment of the pulse is ignored. So, IROUT waveform output is determined
by low-time width.
Fcarrier
HF
low time width low time width low time width
high time width
start
IR disable
IRE
IROUT
Always high-level
Fig. 6-11e LGP=1 and HP=1, IROUT Pin Output Waveform
6.8.3 Programming the Related Registers
When defining IR/PWM, refer to the related registers of its operation as shown in the
tables below.
IR/PWM Related Control Registers
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
TCCCEN/0TCCCTS/0TCCCTE/0
HF/0 LGP/0 IROUTE/0
HPWTIE/0 TCCCIE/0 TCCBIE/0 TCCAIE/0 EXIE/0
Bit 1
Bit 0
TCCBHE
/0
0x09
0X0A
0x0F
0X0B
IOC90
TCCBEN/0TCCBTS/0TCCBTE/0
0
IR CR
/IOCA0
TCCCSE
/0
TCCCS2/0TCCCS1/0TCCCS0/0 IRE/0
IMR
/IOCF0
LPWTIE
/0
ICIE/0
TCIE/0
LTS0/0
HLTS
/IOCB1
HTSE
/0
HTS2/0
HTS1/0
HTS0/0
LTSE/0
LTS2/0
LTS1/0
IR/PWM Related Status/Data Registers
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0x0F
ISR/RF LPWTIF/0 HPWTIF/0 TCCCIF/0 TCCBIF/0 TCCAIF/0 EXIF/0
TCCC
ICIF/0
TCIF/0
0x06
0X09
0X0A
TCCC7/0 TCCC6/0 TCCC5/0 TCCC4/0 TCCC3/0 TCCC2/0 TCCC1/0 TCCC0/0
/IOC81
LTR
/IOC91
LTR7/0
HTR7/0
LTR6/0
HTR6/0
LTR5/0
HTR5/0
LTR4/0
HTR4/0
LTR3/0
HTR3/0
LTR2/0
HTR2/0
LTR1/0
HTR1/0
LTR0/0
HTR0/0
HTR
/IOCA1
52 •
Product Specification (V1.0) 06.16.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
