CXP1021Q データシートの表示（PDF） - Sony Semiconductor

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コンポーネント説明

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CXP1021Q

System Controller for Compact Disc Players

Sony Semiconductor 

CXP1021Q

2. Key combination selection

This function can be used to reduce the number of keys needed.

(a) Selection

Selection is made through Pin 61 (KEYSEL). Selection is determined by the state of this pin immediately

after reset of the CXP1021Q.

When Pin 61 (KEYSEL) is high:

/,

/

keys are combined.

When Pin 61 (KEYSEL) is low:

/,

/

keys are independent.

(b) Operation when Pin 18 (KEYSEL) is high

Key name

Description

Function differs depending on length of time pressed.

,

If the length of time pressed is:

0.5 seconds or less ·········· keys function as tune select keys ( , )

longer than 0.5 seconds ··· keys function as fast-forward, rewind keys ( , )

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