KSZ8851SNLI Micrel Inc, KSZ8851SNLI Datasheet - Page 33

• Manufacturer Part Number: KSZ8851SNLI
• Manufacturer: Micrel Inc

Specifications of KSZ8851SNLI

• Operating Supply Voltage (typ): 3.3V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Micrel, Inc.
KSZ8851SNL/SNLI
SPI Interface to I/O Registers
The KSZ8851SNL provides a SPI interface for the host CPU to access its internal I/O registers. I/O registers serve as the
address that the microprocessor uses when communicating with the device. This is used for configuring operational
settings, reading or writing control, status information, and transferring packets.
I/O Registers
The following I/O Space Mapping Tables apply to 8-bit, 16-bit or 32-bit access. Depending upon the byte enable bits
B[3:0] settings in command phase, each I/O access can be performed the following operations as an 8-bit for 256 address
locations, 16-bit for 128 address locations or 32-bit for 64 address locations.
August 2009
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M9999-083109-2.0