LC89057W-VF4A-E 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LC89057W-VF4A-E

Digital Audio Interface Transceiver

SANYO -> Panasonic 

LC89057W-VF4A-E

9. Initial System Settings

9.1 System Reset (XMODE)

• The system operates correctly when XMODE is set to "H" after 3.0V or higher supply voltage is applied.

When XMODE is set to "L" after power is turned on, the system is reset.

• When setting chip address, demodulation function master or slave, and modulation function or general-purpose I/O

____________

__________

______

function, connect a 10kΩ pull-down or pull-up resistor to EMPHA/UO/CO, AUDIO/VO, CKST/PB, and INT pins.

____________

__________

______

• If EMPHA/UO/CO, AUDIO/VO, CKST/PB, and INT are not pulled up or down, their pin state is unstable at the time

of input. Consequently proper setting cannot be realized. For these pins, pull-up or pull-down resistor must be

connected.

Table 9.1: Pin Names and Settings

Setting

Chip address

Demodulation function master or slave

Modulation function or general-purpose I/O function

Pins

________

EMPHA/UO/CO, AUDIO/VO

_______

CKST/PB

____

INT

Normal system operation range

3.0V 3.3V

Setting completed

DVDD

XMODE

Set pin state

Undefined

Setting input

state

Output state

Setting input

state

Output state

min. 200μs

Figure 9.1 Setting Timing Chart of Function Setting Input Pins

No.7202-10/59

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