LE910Cx HW User Guide
1VV0301298 Rev. 33
Page 78 of 128
2021-06-29
Not Subject to NDA
PAD
Signal
I/O
Function
Type
Comments
B9
DVI_WA0
O
Digital Audio Interface (WA0)
B-PD 1.8V
PCM_SYNC
I2S_WS
B6
DVI_RX
I
Digital Audio Interface (RX)
B-PD 1.8V
PCM_DIN
I2S_DIN
B7
DVI_TX
O
Digital Audio Interface (TX)
B-PD 1.8V
PCM_DOUT
I2S_DOUT
B8
DVI_CLK
O
Digital Audio Interface (CLK)
B-PD 1.8V
PCM_CLK
I2S_CLK
B12
REF_CLK
O
Audio Master Clock
B-PD 1.8V
MCLK
Table 33: Digital Audio Interface Signals (PCM/I2S)
LE910Cx DVI has the following characteristics:
PCM
•
PCM Master and slave modes using short or long frame sync modes
•
16-bit linear PCM format
•
PCM clock rates of 128kHz, 256 kHz, 512 kHz, 1024 kHz and 2048 kHz (Default),
4096kHz
•
Frame size of 8, 16, 32, 64, 128 & 256 bits per frame
•
Sample rates of 8 kHz and 16 kHz
I2S
•
Sample rate 8KHz, 16KHz, 48KHz
•
Sample-width is 16bit only.
•
Supported I2S standard only - Phillips I2S Bus Specifications revised June 5, 1996
In addition to the DVI port, the LE910Cx module provides a master clock signal (REF_CLK
on Pin B12) which can either provide a reference clock to an external codec or form an
PCM/I2S interface together with the DVI port where the REF_CLK acts as the MCLK.
The REF_CLK default frequency is 12.288 MHz.
When using the DVI with REF_CLK as PCM/I2S interface, 12.288 MHz is 256 x fs (where fs
= 48 kHz)