Rainbow-electronics AT77C105A Manuale Utente Scaricare il pdf (Pagina 19)

AT77C105A [Preliminary]

5419A–BIOM–01/05

Two transitions are interpreted as a click if the number of slices between them is less

than CLICKCPT. This is used to differentiate a touch-down/touch-up from a real click. A

click is equivalent to two close touch-down/touch-up transitions.

This register adjusts the “time out” for considering the two transitions as a click.

Note: Clickfreq and Clickcpt registers should not be changed once the click mode is selected.

Movectrl Register Register Name: Movctrl (7 bits)

Access Type: Read/Write

Function: In stream mode, during navigation calculation, the AT77C105A must

interrupt the host when a maximum absolute X or Y movement is detected (second and

third navigation registers). The MOVECTRL register enables you to control this value.

This value can be set as the minimum finger movement value at which the pointing

device makes a displacement.

• MOVCTRL: Generates an interrupt when the second or third navigation register (X

or Y absolute movement) is greater than the value programmed in the Movectrl

0b0000000

0b0000001

0b0000010

...

0b1111111

For example, when MOVCTRL = 0b0001001, an interruption to the host is generated

when the absolute X movement register (second navigation register) or absolute Y

movement register (third navigation register) is greater than 0b00010010.

Note: The Movctrl register should not be changed once the navigation mode is selected.

b6 b5 b4 b3 b2 b1 b0

(MSB) – – – – – (LSB)

0000000

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 38 39

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Rainbow-electronics AT77C105A Manuale Utente Pagina 19