User's Manual

AnyDATA.NET Inc. AnyTime AnyPlace Any Wireless Data Solution

4.4.2 Stereo Headphone Interface

Table 4-4.2 Stereo Headphone Interface

Pin # Pin Name Main Function Type Description

83 MIC2_P MIC2_P I Ear-Mic Jack input *

EAR_DET EAR_DET1

I EAR/MIC Set Detect **

79 HPH_R HPH_R O Stereo headphone output, Right

97 HPH_L HPH_L O Stereo headphone output, Left

Note:

* MIC2, along with being a microphone input, checks to see if the user has pressed the headset key, which

allows the user to connect to or disconnect from a call. This pin is internally pulled high and is therefore

normally in the high state. To activate this input and connect to or disconnect from a call, the user must set

the MIC2 pin to a low state for 100ms to 200ms.

** EAR_DET checks to see if a headset has been connected to the ear-jack. When there is no headset

connected to the ear-jack, the audio path thru an ear jack is disconnected. When a headset is connected to

the ear-jack, audio path is opened. To simulate a headset connected to the ear-jack, the user must apply

LOW signal to the EAR_DET pin for as long as the user wants the audio path thru ear-jack to be kept

open

4.4.3 Digital PCM Interface

The Digital PCM CODEC interface is used for the car-kit audio system. This interface is

optional. External CODEC interface signals are listed below:

Table 4-4.3 Digital CODEC Pinouts

Pin # Pin Name Main Function Type Description

64 GPIO_80 AUX_PCM_CLK B

PCM clock for auxiliary CODEC port

65 GPIO_81 AUX_PCM_SYNC O

PCM data strobe for auxiliary CODEC port

66 GPIO_82 AUX_PCM_DIN I

PCM data input for auxiliary CODEC port

68 GPIO_83 AUX_PCM_DOUT O

PCM data output for auxiliary CODEC port

This feature is not implemented but can be added, please contact ed@anydata.com

for technical support.

4.4.4 Stereo DAC Interface

AD-2001-06-28 Ver 1.1

-28-

DTEV-Dual supports DAC interface to an external stereo DAC for playing stereo sound or

music (MP3 and MIDI, for example). This interface consists of four signals: serial bit clock (SDAC_CLK),

left/right select (SDAC_L_R_N), serial data (SDAC_DOUT), and master clock (SDAC_MCLK).