em78p257 ELAN Microelectronics Corp, em78p257 Datasheet - Page 63

• Manufacturer Part Number: em78p257
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

This specification is subject to change without prior notice.
Table 29 TCCX Status Register (2)
Table 30 TCCX Control Register
Table 31 IR Control Register
• The decimal value of its contents determines the number of oscillator cycles indicating that the IR
• Pulse timer Register :The contents of the Low-time and High-time registers which are loaded
• Bit 6(TCCBIE) TCCBIF interrupt enable bit.
• Bit 4 (TCCBE): Control bit which is used to enable most significant byte of counter
• Bit7:Bit6 (DP1:DP0) : Duty and Period ratio
• Bit 5:Bit 4 ( MF1:MF0 ) : Modulated frequency
• Bit 3(IRE) Infrared Remote Enable bit
OUT pin is active. The inactive period of IR OUT can be calculated as follow:
alternately into the Pulse timer. When loaded, the Pulse timer contents are decremented by “1” every
oscillator cycle. Upon reaching zero, the Pulse timer will be loaded with the contents of the other
register.
0: disable TCCBIF interrupt
1: enable TCCBIF interrupt
0: Disable IRE. Disable H/W Modulator Function.
TCC2E
t
1 = Enable most significant byte of TCCBH.
0 = Disable most significant byte of TCCBH (default value).
High
DP1
7
7
7
-
=(decimal value held in High-time register)/fosco
DP1
MF1
0
0
1
1
0
0
1
1
TCCBIE
TCC4E
DP0
6
6
6
DP0
MF0
0
1
0
1
0
1
0
1
TCCBTS
TCC6E
MF1
5
5
5
1:2(default)
Fosc/1
Fosc/4
Fosc/8
Fosco
Ratio
TCCBTE
TCCBE
1:3
1:4
MF0
-
-
4
4
4
63
IRE
3
3
3
-
-
TCCCIE
HF
2
2
2
-
TCCCTS
LGP
1
1
EM78P257
1
-
07.27.2004 (V1.4)
OTP ROM
TCCCTE
PWM
0
0
0
-