AK4543 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK4543

AC’97™ Rev 2.1 Multimedia Audio CODEC

Asahi Kasei Microdevices 

[ASAHI KASEI]

nActivate Test Mode

RESET#

SDATA_OUT

SDATA_IN

BIT_CLK

nAKM Test Mode

RESET#

SDATA_OUT=”L”

SYNC

Tsetup2rst

Toff

VIH

VIH

HI-Z

Tsetup2rst

VIH

VIH

[AK4543]

Notes:1

1. All AC-link signals are normally low through the trailing edge of RESET#. Bringing SDATA_OUT high for the rising edge of RESET#

causes the AK4543 AC-link outputs to go high impedance which is suitable for ATE in circuit testing. Note that the AK4543 enters in

the ATE test mode regardless SYNC is high or low.

2. Bringing both SYNC high and SDATA_OUT low for the rising edge of RESET# causes AKM test mode.

3. Once test modes have been entered, the only way to return to the normal operating state is to issue “cold reset” which issues RESET#

with both SYNC and SDATA_OUT low.

1 All the following sentences written with small italic font in this document quote the AC’97 component specification.

<M0046-E-01>

- 10 -

1999/01

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