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LAN9210 参数 Datasheet PDF下载

LAN9210图片预览
型号: LAN9210
PDF下载: 下载PDF文件 查看货源
内容描述: 外形小巧单芯片以太网控制器与HP Auto-MDIX的 [Small Form Factor Single- Chip Ethernet Controller with HP Auto-MDIX]
分类和应用: 控制器以太网
文件页数/大小: 458 页 / 4618 K
品牌: SMSC [ SMSC CORPORATION ]
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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface  
Datasheet  
5.2.3  
Ethernet PHY Interrupts  
The Port 1 and Port 2 PHYs each provide a set of identical interrupt sources. The top-level PHY_INT1  
(bit 26) and PHY_INT2 (bit 27) of the Interrupt Status Register (INT_STS) provides indication that a  
PHY interrupt event occurred in the Port x PHY Interrupt Source Flags Register  
(PHY_INTERRUPT_SOURCE_x).  
Port 1 and Port 2 PHY interrupts are enabled/disabled via their respective Port x PHY Interrupt Mask  
Register (PHY_INTERRUPT_MASK_x). The source of a PHY interrupt can be determined and cleared  
via the Port x PHY Interrupt Source Flags Register (PHY_INTERRUPT_SOURCE_x). The Port 1 and  
Port 2 PHYs are each capable of generating unique interrupts based on the following events:  
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ENERGYON Activated  
Auto-Negotiation Complete  
Remote Fault Detected  
Link Down (Link Status Negated)  
Auto-Negotiation LP Acknowledge  
Parallel Detection Fault  
Auto-Negotiation Page Received  
In order for a Port 1 or Port 2 interrupt event to trigger the external IRQ interrupt pin, the desired PHY  
interrupt event must be enabled in the corresponding Port x PHY Interrupt Mask Register  
(PHY_INTERRUPT_MASK_x), the PHY_INT1(Port 1 PHY) and/or PHY_INT2(Port 2 PHY) bits of the  
Interrupt Enable Register (INT_EN) must be set, and IRQ output must be enabled via bit 8 (IRQ_EN)  
of the Interrupt Configuration Register (IRQ_CFG).  
For additional details on the Ethernet PHY interrupts, refer to Section 7.2.8.1, "PHY Interrupts," on  
page 94.  
5.2.4  
GPIO Interrupts  
Each GPIO[11:0] of the LAN9312 is provided with its own interrupt. The top-level GPIO (bit 12) of the  
Interrupt Status Register (INT_STS) provides indication that a GPIO interrupt event occurred in the  
General Purpose I/O Interrupt Status and Enable Register (GPIO_INT_STS_EN). The General  
Purpose I/O Interrupt Status and Enable Register (GPIO_INT_STS_EN) provides enabling/disabling  
and status of each GPIO[11:0] interrupt.  
In order for a GPIO interrupt event to trigger the external IRQ interrupt pin, the desired GPIO interrupt  
must be enabled in the General Purpose I/O Interrupt Status and Enable Register  
(GPIO_INT_STS_EN), bit 12 (GPIO_EN) of the Interrupt Enable Register (INT_EN) must be set, and  
IRQ output must be enabled via bit 8 (IRQ_EN) of the Interrupt Configuration Register (IRQ_CFG).  
For additional details on the GPIO interrupts, refer to Section 13.2.2, "GPIO Interrupts," on page 163.  
5.2.5  
Host MAC Interrupts  
The top-level Interrupt Status Register (INT_STS), and Interrupt Enable Register (INT_EN) provide the  
status and enabling/disabling of multiple Host MAC related interrupts. All Host MAC interrupts are  
monitored and configured directly within these two registers. The following Host MAC related interrupt  
events are supported:  
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TX Stopped  
RX Stopped  
RX Dropped Frame Counter Halfway  
TX IOC  
RX DMA  
Revision 1.2 (04-08-08)  
SMSC LAN9312  
DATA5S2HEET