KSZ8851SNL-BBE-EVAL Micrel Inc, KSZ8851SNL-BBE-EVAL Datasheet - Page 33

• Manufacturer Part Number: KSZ8851SNL-BBE-EVAL
• Description: BOARD EVAL MAC/PHY FOR KSZ8851
• Manufacturer: Micrel Inc
• Series: LinkMD®r

Specifications of KSZ8851SNL-BBE-EVAL

• Design Resources: BeagleBoard Zippy2
• Main Purpose: Interface, Ethernet Controller (PHY and MAC)
• Embedded: No
• Utilized Ic / Part: KSZ8851SNL
• Primary Attributes: 1 Port, 100BASE-TX/10BASE-T
• Secondary Attributes: SPI Interface, LinkMD Cable Diagnostics
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-3602; KSZ8851SNL-BBE-EVL; ZIPPY2

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