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UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
1031 of 1269
NXP Semiconductors
UM10503
Chapter 41: LPC43xx I2S interface
41.4.2 I2S connections to the GIMA
The Word Select (MWS) signal is generated by the I2S blocks in slave and master mode
to capture or generate data. MWS either originates either from the pin mux (SCU) in slave
mode (the I2S_WS signal) or is generated by the I2S block in master mode. The MWS
signal is then routed to the SCU (in master mode only) and to the GIMA where it can be
selected as input to Timer3 or the SCT. The MWS signal which is connected to the GIMA,
is divided by 128.
Fig 132. WS signal connections
ws gen
rx capture
/128
SCU (PINMUX)
ws_sel
GIMA
I2S
RX_MWS/TX_MWS
RX_WS/TX_WS
(slave mode)