EM78P257 datasheet(55/91 Pages) EMC

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EM78P257

OTP ROM

This specification is subject to change without prior notice.

07.27.2004 (V1.4)

0x01

TCC/R1

TCC7

TCC6

TCC5

TCC4

TCC3

TCC2

TCC1

TCC0

0X09

TCCSR/R9

CMPOUT4 CMPOUT3 CMPOUT2 CMPOUT1

TCCCIF

TCCBIF

TCCAIF

0X05

TCCA/IOC51

TCCA7

TCCA6

TCCA5

TCCA4

TCCA3

TCCA2

TCCA1

TCCA0

0x06

TCCBL/IOC61

TCCB7

TCCB6

TCCB5

TCCB4

TCCB3

TCCB2

TCCB1

TCCB0

• TCCA: An eight-bit time clock/counter A. In MOUSE mode, it will load X-axis data into TCCA, it is

defined as an increment/decrement counter.

• TCCB: An eight-bit time clock/counter B. In MOUSE mode, it will load Y-axis data into TCCB, it is

defined as an increment/decrement counter.

• TCCC: An eight-bit time clock/counter C. In MOUSE mode, it will load Z-axis data into TCCC, it is

defined as an increment/decrement counter.

Table 23 TCCX Status Register (1)

TCCAIE

TCCATS

TCCATE

• Bit 7~Bit 3 Not used, read as ‘0’.

• Bit 2(TCCAIE) TCCAIF interrupt enable bit.

0: disable TCCAIF interrupt

1: enable TCCAIF interrupt

• Bit 1(TCCATS) TCCA signal source

0: internal instruction cycle clock

1: transition on the TCC1 pin

• Bit 0(TCCATE) TCCA signal edge

0: increment if the transition from low to high (leading edge) takes place on the TCC2 pin

1: increment if the transition from high to low (leading edge) takes place on the TCC2 pin

Table 24 TCCX Status Register (2)

TCCBIE

TCCBTS

TCCBTE

TCCCIE

TCCCTS

TCCCTE

• Bit 7 Not used.

• Bit 6(TCCBIE) TCCBIF interrupt enable bit.

0: disable the TCCBIF interrupt

1: enable the TCCBIF interrupt

• Bit 5(TCCBTS) TCCB signal source

0: internal instruction cycle clock

1: transition on the TCC3 pin

• Bit 4(TCCBTE) TCCB signal edge

0: increment if the transition from low to high (leading edge) takes place on the TCC4 pin

1: increment if the transition from high to low (leading edge) takes place on the TCC4 pin

EM78P257 Datasheet(PDF) 55 Page - ELAN Microelectronics Corp

EM78P257 Datasheet(HTML) 55 Page - ELAN Microelectronics Corp

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