ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
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Revision 2.4
5.14.3 I2S Block Diagram
00
01
10
11
OSC32K
HCLK
OSC48M
OSC10K
I2S_CLK
I2S0CKEN(
CLK_APBCLK0[29]
I2S
0
SEL(
CLK_CLKSEL2[1:0]
Figure 5-77 I2S Clock Control Diagram
Transmit
Contrl
&
TXFIFO
Receive
Control
&
RXFIFO
Tx Shift Register
Rx Shift Register
I2S_CLK_GEN
SLAVE_MODE
MUX
MUX
APB Bus
WS
Shift Clock
I2S_MCLK
I2S_FS
I2S_SDO
I2S_SDI
I2S_BCLK
dma_req
dma_ack
APB
Interface
&
Control
Registers
Figure 5-78 I2S Controller Block Diagram