EVK-JODY-W2 - User guide
UBX-19027118 - R06
Contents
Page 20 of 25
C1 - Public
Name
I/O
Description
Remarks
UART_TXD
O
UART TX signal
Connect to Host RX
UART_RXD
I
UART RX signal
Connect to Host TX
UART_RTS
O
UART RTS signal
Connect to Host CTS
UART_CTS
I
UART CTS signal
Connect to Host RTS
Table 9: UART signal description
Figure 16: Bluetooth over UART interface
3.7
Bluetooth audio interface
A MAX9860 16-bit audio codec for Bluetooth voice applications is provided on the JODY-W2 EVK and
connected to the PCM interface of the module. A 3.5 mm audio jack (J206) to connect a headset is
available on the bottom side of the EVK. The codec is operated with a master clock (MCLK) of
19.2 MHz. The MAX9860 audio codec is completely controlled through software using an I2C
interface. The codec responds to the I2C slave address 0x20 for all write commands and 0x21 for all
read operations.
Place jumpers J401 and J402 to enable the audio codec, as shown in
Figure 17: Enable audio codec option
The I2C interface of the audio codec is provided on connector
J303
of the EVK as shown in
Error!
Reference source not found.
The PCM interface of the JODY-W2 module is directly connected to the serial audio interface of the
MAX9860 audio codec. The PCM pins are additionally provided on connector
J301,
as shown in
Error! Reference source not found.
.
Name
I/O
Connector / pin no.
Description
I2C_SDA
I/O
J303 / 11
I2C Serial-Data Input/Output
I2C_SCL
I
J303 / 13
I2C Serial-Data clock
PCM_CLK
I/O
J301 / 16
PCM clock
PCM_SYNC
I/O
J301 / 15
PCM frame sync
PCM_IN
I
J301 / 18
PCM data in
PCM_OUT
O
J301 / 17
PCM data out
Table
10
: Audio interfaces
J400
