Datasheet
LPC3141_43 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 1 — 4 June 2012 34 of 69
NXP Semiconductors
LPC3141/3143
Low-cost, low-power ARM926EJ microcontrollers
6.28.2 Multiplexing between LCD and MPMC
The multiplexing between the LCD interface and MPMC allows for the following two
modes of operation:
• MPMC-mode: SDRAM and bus-based LCD or SRAM
• LCD-mode: Dedicated LCD interface
The external NAND flash is accessible in both modes.
The block diagram Figure 9
gives a high level overview of the modules in the chip that are
involved in the pin interface multiplexing between the EBI, NAND flash controller, MPMC,
and RAM-based LCD interface.
NAND related pin multiplexing
mNAND_RYBN0 NAND_RYBN0 MCI_DAT_4 NAND_RYBN0 — NAND flash controller Read/Not busy signal 0.
MCI_DAT_4 — MCI card data input/output line 4.
mNAND_RYBN1 NAND_RYBN1 MCI_DAT_5 NAND_RYBN1 — NAND flash controller Read/Not busy signal 1.
MCI_DAT_5 — MCI card data input/output line 5.
mNAND_RYBN2 NAND_RYBN2 MCI_DAT_6 NAND_RYBN2 — NAND flash controller Read/Not busy signal 2
MCI_DAT_6 — MCI card data input/output line 6.
mNAND_RYBN3 NAND_RYBN3 MCI_DAT_7 NAND_RYBN3 — NAND flash controller Read/Not busy signal 3.
MCI_DAT_7 — MCI card data input/output line 7.
Audio related pin multiplexing
mI2STX_DATA0 I2STX_DATA0 PCM_DA I2STX_DATA0 — I2S interface 0 transmit data signal.
PCM_DA — PCM serial data line A.
mI2STX_BCK0 I2STX_BCK0 PCM_FSC I2STX_BCK0 — I2S interface 0 transmit bit clock signal.
PCM_FSC — PCM frame synchronization signal.
mI2STX_WS0 I2STX_WS0 PCM_DCLK I2STX_WS0 — I2S interface 0 transmit word select signal.
PCM_DCLK — PCM data clock output.
mI2STX_CLK0 I2STX_CLK0 PCM_DB I2STX_CLK0 — I2S interface 0 transmit clock signal.
PCM_DB — PCM serial data line B.
UART related pin multiplexing
mUART_CTS_N UART_CTS_N SPI_CS_OUT1 UART_CTS_N — UART modem control Clear-to-send signal.
SPI_CS_OUT1 — SPI chip select out for slave 1 (used in master
mode).
mUART_RTS_N UART_RTS_N SPI_CS_OUT2 UART_RTS_N — UART modem control Request-to-Send signal.
SPI_CS_OUT2 — SPI chip select out for slave 2 (used in master
mode).
Table 10. Pin descriptions of multiplexed pins
…continued
Pin Name Default Signal Alternate Signal Description