![NXP Semiconductors LPC43Sxx Скачать руководство пользователя страница 1228](http://html1.mh-extra.com/html/nxp-semiconductors/lpc43sxx/lpc43sxx_user-manual_17218271228.webp)
UM10503
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
1228 of 1441
NXP Semiconductors
UM10503
Chapter 44: LPC43xx/LPC43Sxx I2S interface
44.7.2.2.6
Receiver master mode (BASE_AUDIO_CLK)
Table 1027.
Receiver master mode (BASE_AUDIO_CLK)
CREG bit 13 DAI bit 5
RXMODE
bits [3:0]
Description
1
0
1 0 0 1
Receiver master mode.
The I2S receive function operates as a master.
The receive clock source (RX_MCLK) is derived from the BASE_AUDIO_CLK.
The WS used is the internally generated RX_WS.
The RX_MCLK pin is enabled for output.
Bold lines indicate the clock path for this configuration. CREG6 bits 12 and 13 select BASE_AUDIO_CLK for the I2S0 interface.
CREG bits 14 and 15 select BASE_AUDIO_CLK for the I2S1 interface.
Fig 160.
Receiver master mode (BASE_AUDIO_CLK)
I
2
S
peripheral
block
1
0
RXMODE[2]=0
TX_SCK
RX_SCK
(1 to 64)
TX_MCLK
RX_MCLK
8-bit
Fractional
Rate Divider
X
Y
DAI[5]=0
TXRATE[15:8]
TXRATE[7:0]
01
10
RXMODE[1:0]=01
RXBITRATE[5:0]
1
0
TX_WS
RX_WS
I2S_RX_WS
DAI[5]=0
Pin OEn
I2S_RX_SDA
I2S_RX_MCLK
RXMODE[3]=1
I2S_RX_SCK
Pin OE
0
1
00
0
1
CREG6[13]=1
0
1
PCLK
RXMODE[2]=0
BASE_AUDIO_CLK