PR31700 Datasheet, PDF (22/36 Pages) NXP Semiconductors – 32-bit RISC microprocessor

Philips Semiconductors
32-bit RISC microprocessor
Preliminary specification
PR31700
POWER MODULE
The PR31700 has a Power Module with the following features.
• power-down modes for individual internal peripheral modules
• serial (SPI port) power supply control interface supported
• power management state machine has 3 states: RUNNING,
DOZING and SLEEP
SERIAL INTERCONNECT BUS (SIB) MODULE
The PR31700 has a SIB Module with the following features.
• The PR31700 contains holding and shift registers to support
the serial interface to the UCB1200 ASIC and/or other
optional codec devices
• synchronous, frame-based protocol
• The PR31700 always master source of clock and frame
frequency and phase; programmable clock frequency
• each SIB frame consists of 128 clock cycles, further divided
into 2 subframes or words of 64 bits each (supports up to 2
devices simultaneously)
• independent DMA support for audio receive and transmit,
telecom receive and transmit
• supports 8-bit or 16-bit mono telecom formats
• supports 8-bit or 16-bit mono or stereo audio formats
• independently programmable audio and telecom sample rates
• CPU read/write registers for subframe control and status
SERIAL PERIPHERAL INTERFACE (SPI) MODULE
The PR31700 has an SPI Module with the following features.
• provides interface to SPI peripherals and devices
• full-duplex, synchronous serial data transfers (data in, data
out, and clock signals)
• The PR31700 supplies dedicated chip select and interrupt for
an SPI interface serial power supply
• 8-bit or 16-bit data word lengths for the SPI interface
• programmable SPI baud rate
TIMER MODULE
The PR31700 has a Timer Module with the following features.
• Real Time Clock (RTC) and Timer
• 40-bit counter (30.517 s granularity);
maximum uninterrupted time = 388.36 days
• 40-bit alarm register (30.517 s granularity)
• 16-bit periodic timer (0.868 s granularity);
maximum timeout = 56.8 ms
• interrupts on alarm, timer, and prior to RTC roll-over
UART MODULE
The PR31700 has a UART Module with the following features.
• 2 independent full-duplex UARTs
• programmable baud rate generator
• UART A port used for serial control interface to external IR
module
• UART B port used for general purpose serial control interface
• UART A and UART B DMA support for receive and transmit
VIDEO MODULE
The PR31700 has a Video Module with the following features.
• bit-mapped graphics
• supports monochrome, grey scale, or color modes
• time-based dithering algorithm for gray scale and color
modes
• supports multiple screen sizes
• supports split and non-split displays
• variable size and relocatable video buffer
• DMA support for fetching image data from video buffer
1998 May 13
22