Revision 1.31 – February 16, 2012
440EPx – PPC440EPx Embedded Processor
Data Sheet
Serial Ports (UART)
Features include:
• Up to four ports in the following combinations:
– One 8-pin (UART0)
– Two 4-pin (UART0 and UART1)
– One 4-pin (UART0) and two 2-pin (UART1 and UART2)
– Four 2-pin (UART0, UART1, UART2, and UART3)
• Selectable internal or external serial clock to allow wide range of baud rates
• Register compatibility with NS16550 register set
• Complete status reporting capability
• Fully programmable serial-interface characteristics
• Supports DMA using internal DMA function on PLB3
IIC Bus Controller
Features include:
• Two IIC interfaces provided
2
• Support for Philips® Semiconductors I C Specification, dated 1995
• Operation at 100kHz or 400kHz
• 8-bit data
• 10- or 7-bit address
• Slave transmitter and receiver
• Master transmitter and receiver
• Multiple bus masters
• Two independent 4 x 1 byte data buffers
• Twelve memory-mapped, fully programmable configuration registers
• One programmable interrupt request signal
• Provides full management of all IIC bus protocols
• Programmable error recovery
• Includes an integrated bootstrap controller (BSC) that is multiplexed with the IIC0 interface
Serial Peripheral Controller (SPI/SCP)
The Serial Peripheral Interface (also known as the Serial Communications Port) is a full-duplex, synchronous,
character-oriented (byte) port that allows the exchange of data with other serial devices. The SCP is a master on
the serial port supporting a 3-wire interface (receive, transmit, and clock), and is a slave on the OPB.
Features include:
• Three-wire serial port interface
• Full-duplex synchronous operation
• SCP bus master
• OPB bus slave
• Programmable clock rate divider
• Clock inversion
• Reverse data
• Local data loop back for test
AppliedMicro Proprietary
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AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
