User's Manual
Page 6Rev 1.1 MMB Networks 2013 MMB Module Data Sheet
• Selectable data shift direction (either LSB or MSB first)
• Receive and transmit FIFOs
• Receive and transmit DMA channels
• The following signals can be made available on the GPIO pins:
ʳ MOSI (serial data out)
ʳ MISO (serial data in)
ʳ MCLK (serial clock out)
The SPI slave controller has the following features:
• Full duplex operation
• Up to 4 Mbps data transfer rate
• Programmable clock polarity and clock phase
• Selectable data shift direction (either LSB or MSB first)
• Slave select input
• The following signals can be made available on the GPIO pins:
ʳ MOSI (serial data in)
ʳ MISO (serial data out)
ʳ SCLK (serial clock in)
ʳ nSSEL (slave select)
The TWI master controller has the following features:
• Uses only two bidirectional GPIO pins
• Programmable clock frequency (up to 400 kHz)
• Supports 7-bit and 10-bit addressing
• Compatible with Philips I
2
C-bus slave devices
• The following signals can be made available on the GPIO pins:
ʳ SDA (bidirectional serial data)
ʳ SCL (bidirectional serial clock)
The SC1 UART supports the following features:
• Baud rate (300 bps up to 921.6 kbps) (*Note: these values are provided to show the hardware capability. RapidSE does not
provide the ability to modify the baud rate from the default value of 115.2 kbps. However, MMB can adjust it as necessary
through a Non-Recurring Engineering engagement)
• Data bits (7 or 8)
• Parity bits (none, odd, or even)
• Stop bits (1 or 2)
• False start bit and noise filtering
• Receive and transmit FIFOs
• Optional CTS/RTS flow control
• Receiver and transmit DMA channels
• GPIO signals:
ʳ TXD (serial data out)
ʳ RXD (serial data in)
ʳ nRTS (optional)
ʳ nCTS (optional)
6.2 | GPIO
The EM357 has multi-purpose GPIO pins that may be individually configured as:
• General purpose output
• General purpose open-drain output
• Alternate output controlled by a peripheral device
• Alternate open-drain output controlled by a peripheral device
• Analog