User's Manual

AnyDATA.NET Inc. AnyTime AnyPlace Any Wireless Data Solution
TM
NAME
DESCRIPTION CHARACTERISTIC
GND_A Audio Ground Audio Ground (Pin No. 2, 4)
EAR10_N Speaker Output - Analog Output (Pin No. 81)
EAR10_P Speaker Output + Analog Output (Pin No. 80)
MIC1P Mic Input
Analog Input (Pin No. 82),
Mic bias is supplied from this pin.
AUXON Auxiliary Output - Analog Output (Pin No. 73)
AUXOP Auxiliary Output + Analog Output (Pin No. 75)
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_DET1 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 a
low signal to the EAR_DET1 pin for as long as the user wants the audio path to be kept open.
4.3.2 Extended CODEC Interface
The PCM CODEC interface is used for the car-kit audio system. This interface is optional.
External CODEC interface signals are listed below:
Table 4-2 Digital CODEC Pinouts
NAME DESCRIPTION PINOUTS
AUX_PCM_CLK
PCM Clock Pin No. 25
AUX_PCM_DIN PCM Data Input Pin No. 28
AUX_PCM_DOUT PCM Data Output Pin No. 26
AUX_PCM_SYNC PCM Sync. Pin No. 27
4.4 UART Interface
The Universal Asynchronous Receiver Transmitter (UART) communicates with serial data that
conforms to the RS-232 Interface protocol. The module has 3 UARTs which provides 3.0V CMOS level
outputs and 3.0V CMOS input levels. All the control signals of the RS-232 are active low, however the
data signals, RXD and TXD, are active high.
All Rights Reserved.
AD-2001-06-28 Ver 1.1
-22-
UART1 which has 512 bytes for Tx and Rx FIFO, supports high speed data communication up to
230.4kbps, program download and diagnostic monitor function.
UART2 and 3 which 64 bytes for T/Rx FIFO, support low speed data communication up to 115.2kbps,
program download and diagnostic monitor function.