Summary of HI32 Signals and Modes | Motorola DSP56301 guide

Host Interface (HI32)

Table 2-10.Host Interface (Continued)

Signal Name	Type	State During	Signal Description
Signal Name	Type	Reset	Signal Description
		Reset


HAD[31–16]	Input/Output	Tri-stated	Host Address/Data 16–31—When the HI32 is programmed to
			interface with a PCI bus and the HI function is selected, these
			signals are lines 16–31 of the bidirectional, multiplexed
			Address/Data bus.
HD[23–8]	Input/Output		Host Data 8–23—When the HI32 is programmed to interface with a
			universal non-PCI bus and the HI function is selected, these signals
			are lines 8–23 of the bidirectional Data bus.
			Port B —When the HI32 is configured as GPIO through the DCTR,
			these signals are internally disconnected.

	Input	Tri-stated	Hardware Reset—When the HI32 is programmed to interface with
HRST	Input	Tri-stated
			a PCI bus and the HI function is selected, this is the Hardware Reset
			input.
HRST	Input		Hardware Reset—When the HI32 is programmed to interface with
			a universal non-PCI bus and the HI function is selected, this signal
			is the Hardware Reset Schmitt-trigger input.
			Port B —When the HI32 is configured as GPIO through the DCTR,
			this signal is internally disconnected.

	Output, open	Tri-stated	Host Interrupt A—When the HI function is selected, this signal is
HINTA	Output, open	Tri-stated
	drain		the Interrupt A open-drain output.
			Port B —When the HI32 is configured as GPIO through the DCTR,
			this signal is internally disconnected.

PVCL	Input	Input	PCI Voltage Clamp— When the HI32 is programmed to interface
			with a PCI bus and the HI function is selected and the PCI bus uses
			a 3 V signal environment, connect this pin to VCC (3.3 V) to enable
			the high voltage clamping required by the PCI specifications. In all
			other cases, including a 5 V PCI signal environment, leave the input
			unconnected.

Table 2-11.Summary of HI32 Signals and Modes

Signal	PCI Mode	Enhanced Universal Bus Mode	Universal Bus Mode	GPIO Mode
Name	PCI Mode	Enhanced Universal Bus Mode	Universal Bus Mode	GPIO Mode
Name


HP0	HAD0	HA3		HIO0

HP1	HAD1	HA4		HIO1

HP2	HAD2	HA5		HIO2

HP3	HAD3	HA6		HIO3

HP4	HAD4	HA7		HIO4

HP5	HAD5	HA8		HIO5

HP6	HAD6	HA9		HIO6

HP7	HAD7	HA10		HIO7

2-14	DSP56301 User’s Manual

DSP56301 specifications

The Motorola DSP56301 is a highly efficient digital signal processor, specifically engineered for real-time audio and speech processing applications. This DSP is part of Motorola's renowned DSP56300 family, which is recognized for its innovative features and outstanding performance in the realm of digital signal processing.

One of the main features of the DSP56301 is its ability to handle complex computations at high speeds. With a maximum clock frequency of 66 MHz, it delivers fast performance, enabling it to process audio signals in real time. The chip is built on a 24-bit architecture, which allows for high-resolution audio processing. This is particularly beneficial in applications such as telecommunications, consumer audio devices, and professional audio equipment, where precision is paramount.

The DSP56301 boasts a comprehensive instruction set that includes efficient mathematical operations, which are essential for digital filters and audio effects processing. One of the key innovations of this device is its dual data path architecture, which permits simultaneous processing of multiple data streams. This feature significantly enhances the device's throughput and responsiveness, making it suitable for demanding applications such as voice recognition and synthesis.

In terms of memory regions, the DSP56301 includes several on-chip memory categories, such as program memory, data memory, and a specialized memory for coefficients. The architecture's support for external memory expansion further increases its versatility, allowing designers to tailor systems to their specific requirements.

The DSP56301 implements advanced features such as a powerful on-chip hardware multiplier and accumulator, simplifying complex mathematical tasks and accelerating the execution of algorithms. Its flexible interrupt system enhances its capability to respond to time-sensitive operations, while the integrated serial ports facilitate efficient data communication with external devices.

Power consumption is also a vital characteristic of the DSP56301. It is designed with energy efficiency in mind, allowing for extended operation in battery-powered devices. The chip’s low power requirements are particularly advantageous in portable audio devices and other applications where energy conservation is crucial.

In conclusion, the Motorola DSP56301 is an exceptional digital signal processor that combines high processing power, flexibility, and efficiency. Its main features, advanced technologies, and robust architecture make it a top choice for developers seeking to create sophisticated audio and signal processing systems. With its enduring legacy in the industry, the DSP56301 continues to be relevant in a variety of modern applications, ensuring it remains a valuable tool for engineers and designers.

Motorola DSP56301 user manual Summary of HI32 Signals and Modes

Models: DSP56301

Table 2-10.Host Interface (Continued)

Signal Name

HD[23–8]

Input/Output

HINTA

PVCL

Table 2-11.Summary of HI32 Signals and Modes

Signal

PCI Mode

Enhanced Universal Bus Mode

GPIO Mode

Name

DSP56301 specifications