參數(shù)資料
型號： CP2200-GQ
廠商： Silicon Laboratories Inc
文件頁數(shù)： 85/108頁
文件大小： 0K
描述： IC ETH CTRLR SNGL-CHIP 48TQFP
標(biāo)準(zhǔn)包裝： 250
控制器類型： 以太網(wǎng)控制器，MAC/10Base-T
接口： 并行/串行
電源電壓： 3.1 V ~ 3.6 V
電流 - 電源： 75mA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 48-TQFP
供應(yīng)商設(shè)備封裝： 48-TQFP（7x7）
包裝： 托盤
產(chǎn)品目錄頁面： 627 (CN2011-ZH PDF)
配用： 336-1316-ND - KIT EVAL FOR CP2201 ETH CTRLR
其它名稱： 336-1312
CP2200/1
78
Rev. 1.0
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:
Step 1: Determine if the physical layer is set to full-duplex or half-duplex. The MAC must be set to the same
duplex mode as the physical layer before sending or receiving any packets.
Step 2: Write 0x40B3 (full-duplex) or 0x4012 (half-duplex) to MACCF. The appropriate bits in this register
may also be set or cleared to change padding options or MAC behavior.
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
appropriate bits to enable these functions.
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:
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
register.
Step 4: Perform a read on MACRW to transfer the contents of the indirect register to
MACDATAH:MACDATAL. The MACDATAH and MACDATAL registers may now be directly read to
determine the contents of the indirect register.
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CP2200-GQR 功能描述:以太網(wǎng) IC Ethernet Controller RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
CP2201 制造商:SILABS 制造商全稱:SILABS 功能描述:SINGLE-CHIP ETHERNET CONTROLLER
CP2201EK 功能描述:以太網(wǎng)開發(fā)工具 ETHERNET EVAL KIT RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓:
CP2201-GM 功能描述:以太網(wǎng) IC Ethernet Controller RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
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