IDT88K8483 Integrated Device Technology, IDT88K8483 Datasheet - Page 40

• Manufacturer Part Number: IDT88K8483
• Description: Spi-4 Exchange Document Issue 1.0
• Manufacturer: Integrated Device Technology

JTAG
GPIO
IDT IDT88K8483
Serial microprocessor interface:
– Compliance to Motorola Serial Peripheral Interface (SPI) specification
– Byte access
– Direct accessed space used for quick interrupt processing
– Expanded indirect access space used for provisioning
– Read operations to a reserved address or reserved bit fields return 0
– Write operations to reserved addresses or bit fields are ignored
– Complies with the IEEE 1149.1 standard.
– Three GPIO signals are provided. Each signal may be independently defined as an input or an output pin.
– The GPIO interface allows flexible use of the GPIO pins. The following can be defined per GPIO pin:
Direction: input or output
Level: value to write if programmed to be an output, or value that is being read if programmed to be an input
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October 20, 2006