Revision 2.04 – September 7, 2007
405GPr – Power PC 405GPr Embedded Processor
Data Sheet
Serial Interface
• One 8-pin UART and one 4-pin UART interface provided
• Selectable internal or external serial clock to allow a wide range of baud rates
• Register compatibility with NS16550 register set
• Complete status reporting capability
• Transmitter and receiver are each buffered with 16-byte FIFOs when in FIFO mode
• Fully programmable serial-interface characteristics
• Supports DMA using internal DMA engine
IIC Bus Interface
2
• Compliant with 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
• Supports fixed V IIC interface
DD
• Two independent 4 x 1 byte data buffers
• Fifteen memory-mapped, fully programmable configuration registers
• One programmable interrupt request signal
• Provides full management of all IIC bus protocol
• Programmable error recovery
General Purpose IO (GPIO) Controller
• Controller functions and GPIO registers are programmed and accessed via memory-mapped OPB bus master
accesses
• 23 of 24 GPIOs are pin-shared with other functions. DCRs control whether a particular pin that has GPIO
capabilities acts as a GPIO or is used for another purpose. The 23 GPIOs are multiplexed with:
- 7 of 8 chip selects
- All 13 external interrupts
- All nine instruction trace pins
• Each GPIO output is separately programmable to emulate an open-drain driver (i.e., drives to zero, three-
stated if output bit is 1)
12
AMCC
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
