EKA8566A 查看數據表（PDF） - ELAN Microelectronics

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产品描述 (功能)

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EKA8566A

USB Audio Controller

ELAN Microelectronics 

eKA8566A

USB Audio Controller

11.3.3 Key Scan

Format: cmd (0x1) + data (1 byte)

a. Button Pressed Command: cmd (0x1) + Key Code (0~254)

b. Button Released Command: cmd (0x1) + 0xF + 0xF

Description:

a. CID send the key scanned to EKA8566A

b. MSB significant nibble is sent first.

Timing:

1. Button Pressed Command (Key code=0~254)

CLK

DATA

DIR

CMD(0x1)

Key code

(MSB)

Key code

(LSB)

CRS

2. Button Released Command (Key code=255)

CLK

DATA

CMD(0x1)

0xF

0xF

DIR

CRS

14 •

Product Specification (V0.1) 10.23.2006

(This specification is subject to change without further notice)

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