EMP202 datasheet(27/28 Pages) ETC2

Part #	EMP202

Description	Single-Chip Dual-Channel AC??7 Audio Codec for PC Audio Systems

PDF	28 Pages

Scroll/Zoom	100%

Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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27 / 28 page

Single-Chip Dual-Channel AC’97 Audio Codec

EMP202

EMPIA Technology

7/15/2002

8.4. CD Input

Pay attention to differential CD input. Below is an example of differential CD input.

Example of differential CD input

8.5. Odd Addressed Register Access

The EMP202 will return “0000h” when odd-addressed registers and unimplemented registers are

read.

8.6. Power-down Mode

Warm Reset

Cold Reset

Ready =1

Normal

ADCs off PR0

DACs off PR1

Analog off

PR2 or PR3

Digital I/F off

PR4

Shut off

AC-Link

Default

PR0=0 & ADC=1

PR1=0 & DAC=1

PR2=0 & ANL=1

PR0=1

PR1=1

PR2=1

PR4=1

Example of the EMP202 power-down/power-up flow

8.7. Test Mode

8.7.1.ATE In Circuit Test Mode

SDATA_OUT is sampled high at the trailing edge of RESET#. In this mode, the EMP202 will drive

BIT_CLK, SDATA_IN, EAPD, GPIOs, IDs, and SPDIFO to high impedance.

8.7.2.Vendor Specific Test Mode

All other modes are reserved.

EMP202 Datasheet(PDF) 27 Page - List of Unclassifed Manufacturers