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參數(shù)資料
| 型號： | KSZ8851-16MLL TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 25/84頁 |
| 文件大小： | 0K |
| 描述： | IC MAC CTLR 1PORT W/BUS 48LQFP |
| 產(chǎn)品培訓(xùn)模塊： | KSZ8851 10/100 Embedded Controllers |
| 標準包裝： | 1,000 |
| 控制器類型： | 以太網(wǎng)控制器，MAC/PHY |
| 接口： | 總線 |
| 電源電壓： | 1.8V，2.5V，3.3V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 帶卷 (TR) |
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Micrel, Inc.
KSZ8851-16MLL/MLLI
March 11, 2014
31
Revision 2.2
In order to read received frames from RXQ without error, the software driver must use following steps:
When receive interrupt occurred and software driver writes “1” to clear the RX interrupt in ISR register; the KSZ8851 will
update Receive Frame Counter (RXFCTR) Register for this interrupt.
When software driver reads back Receive Frame Count (RXFCTR) Register; the KSZ8851 will update both Receive
Frame Header Status and Byte Count Registers (RXFHSR/RXFHBCR).
When software driver reads back both Receive Frame Header Status and Byte Count Registers (RXFHSR/RXFHBCR);
the KSZ8851 will update next receive frame header status and byte count registers (RXFHSR/RXFHBCR).
EEPROM Interface
It is optional in the KSZ8851-16MLL to use an external EEPROM. The EED_IO (pin 9) must be pulled high to use external
EEPROM otherwise this pin pulled low or floating without EEPROM.
An external serial EEPROM with a standard microwire bus interface is used for non-volatile storage of information such as
the host MAC address. The KSZ8851-16MLL can detect if the EEPROM is a 1KB (93C46) or 4KB (93C66) EEPROM
device (the 93C46 and the 93C66 are typical EEPROM devices). The EEPROM must be organized as 16-bit mode.
If the EED_IO pin is pulled high, then the KSZ8851-16MLL performs an automatic read of the external EEPROM words
0H to 3H after the de-assertion of Reset. The EEPROM values are placed in certain host-accessible registers. EEPROM
read/write functions can also be performed by software read/writes to the EEPCR (0x22) registers.
The KSZ8851-16MLL EEPROM format is given in Table 11.
WORD
15
8
7
0
0H
Reserved
1H
Host MAC Address Byte 2
Host MAC Address Byte 1
2H
Host MAC Address Byte 4
Host MAC Address Byte 3
3H
Host MAC Address Byte 6
Host MAC Address Byte 5
4H – 6H
Reserved
7H-3FH
Not used for KSZ8851-16MLL (available for user to use)
Table 11. KSZ8851-16MLL EEPROM Format
Loopback Support
The KSZ8851-16MLL provides two loopback modes, one is Near-end (Remote) loopback to support for remote diagnostic
of failure at line side, and the other is Far-end (Local) loopback to support for local diagnostic of failure at host side. In
loopback mode, the speed at the PHY port will be set to 100BASE-TX full-duplex mode.
Near-End (Remote) Loopback
Near-end (Remote) loopback is conducted at PHY port 1 of the KSZ8851-16MLL. The loopback path starts at the PHY
port’s receive inputs (RXP1/RXM1), wraps around at the same PHY port’s PMD/PMA, and ends at the PHY port’s transmit
outputs (TXP1/TXM1).
Bit [9] of register P1SCLMD (0xF4) is used to enable near-end loopback. The ports 1 near-end loopback path is illustrated
in the following Figure 9.
Far-End (Local) Loopback
Far-end (Local) loopback is conducted at Host of the KSZ8851-16MLL. The loopback path starts at the host port’s
transmit inputs (Tx data), wraps around at the PHY port’s PMD/PMA, and ends at the host port’s receive outputs (Rx data)
Bit [14] of register P1MBCR (0xE4) is used to enable far-end loopback at host side. The host far-end loopback path is
illustrated in Figure 9.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KSZ8851-16MLLU | 功能描述:以太網(wǎng) IC Single-Port Ethernet Controller (Automotive Grade) 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 |
| KSZ8851-16MLLU TR | 功能描述:以太網(wǎng) IC Single-Port Ethernet Controller (Automotive Grade) 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 |
| KSZ8851-16MQL | 功能描述:以太網(wǎng) IC Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free) 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 |
| KSZ8851-16MQL-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free) Eval Board 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: |
| KSZ8851-16MQLI | 功能描述:以太網(wǎng) IC Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free, I-Temp) 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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