Preliminary
PowerNP NPe405L Embedded Processor Data Sheet
IIC Bus Interface
• Compliant with Phillips® Semiconductors I2C 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 VDD IIC interface
• Two independent 4 x 1 byte data buffers
• One programmable interrupt request signal
• Provides full management of all IIC bus protocol
• Programmable error recovery
HDLCEX Interface
• 32-channel HDLC controller
• Two full-duplex Pulse Code Modulation (PCM) Highway ports at speeds up to 4.096 Mbps per port or
8.192 Mbps when using a single port
• Supports HDLC protocol as well as a Transparent mode
• For a single channel per port, autonomous management of I-Frames and S-Frames of the Normal
Response mode (NRM) protocol on one channel per port. U-frames are handled by software.
• Supports software emulation of NRM on all channels
General Purpose IO (GPIO) Controller
• Most GPIOs are pin-shared with other functions. Configuration registers are provided to determine
whether a particular pin that has GPIO capabilities acts as a GPIO or is used for another purpose. The
GPIO function has 32 I/Os.
• Each GPIO output is separately programmable to emulate an open-drain driver (drives to zero, three-
stated if output bit is 1)
Universal Interrupt Controller (UIC)
Two cascaded Universal Interrupt Controllers (UICs) provide the control, status, and communications
necessary for the interrupt sources and the PowerPC processor.
Features include:
10
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
