CP2201EK Silicon Laboratories Inc, CP2201EK Datasheet - Page 78

KIT EVAL FOR CP2201 ETH CTRLR

CP2201EK

Manufacturer Part Number
CP2201EK
Description
KIT EVAL FOR CP2201 ETH CTRLR
Manufacturer
Silicon Laboratories Inc
Type
Controllers & Processorsr
Datasheets

Specifications of CP2201EK

Main Purpose
Interface, Ethernet Sensor
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
CP2200, CP2201
Primary Attributes
Temperature and Light Sensor
Secondary Attributes
Graphic User Interface
Interface Type
Ethernet
Product
Modules
Silicon Manufacturer
Silicon Labs
Silicon Core Number
CP2201
Silicon Family Name
CP220x
Kit Contents
CP2201 Evaluation Board, Power Adapter, CAT5e Ethernet Cable, CD-ROM, Quick-Start Guide
For Use With/related Products
CP2201
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Other names
336-1316

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CP2201EK
Manufacturer:
SiliconL
Quantity:
8
CP2200/1
14. Media Access Controller (MAC)
The CP2200/1 has an IEEE 802.3 compliant Ethernet Media Access Controller (MAC). The MAC can be
configured to automatically pad short frames (full duplex mode only), append CRC, and perform frame length
checking. A loopback mode separate from PHY loopback is also provided for system debugging. The MAC is
configured through nine indirect 16-bit registers summarized in Table 20.
14.1. Initializing the MAC
MAC initialization occurs after the physical layer initialization and typically occurs once after each reset or Auto-
Negotiation Complete interrupt. Most MAC indirect registers can be left at their reset values. See “6.2. Reset
Initialization” on page 18 for the complete reset initialization procedure. The following are the steps required to
initialize the MAC:
14.2. Accessing the Indirect MAC Registers
The indirect MAC registers are accessed through four direct mapped registers: MACADDR, MACDATAH,
MACDATAL, and MACRW. The MAC registers can be accessed using the following procedure:
78
Step 1: Determine if the physical layer is set to full-duplex or half-duplex. The MAC must be set to the same
Step 2: Write 0x40B3 (full-duplex) or 0x4012 (half-duplex) to MACCF. The appropriate bits in this register
Step 3: Write 0x0015 (full-duplex) or 0x0012 (half-duplex) to IPGT.
Step 4: Write 0x0C12 to IPGR.
Step 5: Write 0x05EE to MAXLEN.
Step 6: Program the 48-bit Ethernet MAC Address by writing to MACAD0:MACAD1:MACAD2.
Step 7: Write 0x0001 to MACCN to enable reception. If loopback mode or flow control is desired, set the
Step 1: Write the address of the indirect register to MACADDR.
Step 2: If writing a value to the indirect register, write a 16-bit value to MACDATAH:MACDATAL.
Step 3: Write any value to MACRW to transfer the contents of MACDATAH:MACDATAL to the indirect
Step 4: Perform a read on MACRW to transfer the contents of the indirect register to
duplex mode as the physical layer before sending or receiving any packets.
may also be set or cleared to change padding options or MAC behavior.
appropriate bits to enable these functions.
register.
MACDATAH:MACDATAL. The MACDATAH and MACDATAL registers may now be directly read to
determine the contents of the indirect register.
Rev. 1.0

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