Architecture

Layout

The SpinDrive system will be in the form of a Driver Board-Processing Board stacked configuration. The Driver Board will contain all of the high-current device and relay drivers, as well as input conditioners. The Processing Board contains all of the processors and other chips. The Driver Board is intended to be designed to suit the specific application, but the Processing Board is intended to be universal.

Driver Board

• Sealed Automotive Connector (optional)
• Injector Drivers (12 channels max)
• Ignition Drivers (12 channels max)
• Idle Control Valve Driver (4 channels max)
• 12V Input Conditioners (14 channels max)
• Analog Input Conditioners (16 channels max)
• Barometric Pressure Sensor (optional)
• Manifold Air Pressure Sensor (optional)
• Hall or VR Pulse Input Conditioners (1 minimum)

Processing Board

• Power Supply: 5V, 3.3V
• Supervisor: Propeller Chip @ 80 MHz
• Coordinator: Propeller Chip @ 80 MHz
• 2x 32kB EEPROM
• FTDI serial-to-USB converter
• USB Mini connector
• Real Time Clock with battery backup
• 2x 12-bit Analog-to-Digital Converters
• 3x 16-pin expansion risers
• 2x 12-pin expansion risers

Hardware Block Diagram

Class:	Chip	Bus	Category	External

Communications	USB	← serial →	Supervisor Propeller Chip @ 80 MHz	← databus →	Coordinator Propeller Chip @ 80 MHz
Processing	EEPROM	← i2c →				← i2c →	EEPROM
	RTC
	ADC
	↑		↑↓		↑↓
	Processing Board
Board-to-Board Connector	↑↓
I/O	Driver Board
	↑			↓
	Input Conditioners			Output Drivers
Board-to-Harness Connector	↑	↑	↑	↓	↓	↓	↓
Devices	0-5V	Hall/VR	Switches	Relays	Injectors	Ignitors	Solenoids

Processing Block Diagram

Class:	Chip	Bus	Interface	External

VR or Hall

→

Coordinator Propeller Chip @ 80 MHz

↔

Databus

↔

Supervisor Propeller Chip @ 80MHz

↔

Serial

↔

USB FTDI

EEPROM 32kB

↔

I2C

↔

↔

I2C

↔

EEPROM 32kB

Run

→

Inputs

→

↔

RTC with battery

↔

ADC 16 Channels

Injection

←

←

Inputs

←

Run

Ignition

←

←

Start

→

Outputs

→

Idle Valve

→

Fans

→

Fuel Pump

→

Tach

→

Spare

←

Inputs

→

Outputs

↔

Comms

↔

Storage SSD

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