Pcm/I2S - Audio Interfaces - Ublox JODY-W1 Series System Integration Manual

Desired Rate [kbaud]
28.8
19.2
14.4
9.6
Table 12: Example of common baud rates
High Speed UART signals are powered by the VIO voltage domain.
1.5.4 PCM/I2S – Audio interfaces
JODY-W1 series modules provide two bi-directional 4-wire digital audio interfaces that can be used
for digital voice/audio communication
PCM interface supports:
• Master or slave mode with up to 1024 kHz clock rate.
• 8 kHz or 16 kHz sample rate.
• PCM sample width size of 8 bit or 16 bit.
• Short frame and long frame synchronization.
• Burst mode at up to 24 MHz to reduce host processor load.
The I2S interface supports:
• Master (1.536 MHz or 2.4 MHz) or slave (any frequency up to 3.072 MHz is supported) mode.
• Channel word length: 16bit.
Name I/O
PCM_CLK I/O
PCM_SYNC I/O
PCM_IN I
PCM_OUT O
I2S_CLK I/O
I2S_WS I/O
I2S_DI I
I2S_DO O
Table 13: PCM digital audio signal description
☞
The PCM pins of JODY-W1 series modules can be configured to either PCM or I2S operation mode
through HCI commands. See also
The PCM and I2S signals are powered by the VIO voltage domain.
4 The two physical interfaces are mutually exclusive and cannot work simultaneously.
UBX-16012621 - R18
C1-Public
Actual Rate [kbaud]
28.846
19.2
14.423
9.6
4
with external digital audio devices like an audio codec. The
Description Remarks
PCM clock Output if Master, Input if Slave
Alternate function: I2S clock
PCM frame sync Output if Master, Input if Slave
Alternate function: I2S word select
PCM data out Alternate function: I2S data out
PCM data in Alternate function: I2S data in
I2S clock Reserved for additional I2S interface. Do not connect.
The I2S interface shares the pins with the PCM interface. Use the PCM
I2S word select
pins to connect an I2S interface for Bluetooth audio
I2S data in
I2S data out
PCM/I2S audio interface
System description
JODY-W1 series - System integration manual
Error [%]
0.16
0.00
0.16
0.00
configuration.
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