Details

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BUY KS8721BL https://www.utsource.net/itm/p/12606444.html

Parameter	Description	Value
Device Type	Ethernet Switch IC	KS8721BL
Package	QFN-48 (7x7mm)	-
Operating Voltage	Supply Voltage Range	3.0V to 3.6V
Operating Temperature	Temperature Range (Industrial)	-40掳C to +85掳C
Number of Ports	Ethernet Ports	5 (10/100Mbps)
PHY Type	Integrated PHYs	Yes
MAC Support	IEEE 802.3 10BASE-T, 100BASE-TX	Yes
Management Interface	Management Interface	MDIO
Power Consumption	Typical Power Consumption	1.2W (all ports active)
Jumbo Frame Support	Maximum Frame Size	Up to 9K bytes
Flow Control	Full-Duplex Flow Control	Yes
Auto-Negotiation	Auto-Negotiation Support	Yes
LED Control	LED Control for Link/Activity, Speed, and Collision	Yes
Wake-on-LAN	Wake-on-LAN Support	Yes
Package Pin Count	Number of Pins	48
ESD Protection	Human Body Model (HBM)	卤4kV
RoHS Compliance	RoHS Compliant	Yes

Instructions for Use

1. Power Supply:

   • Connect the VCC pin to a stable 3.0V to 3.6V power supply.
   • Ensure that the ground (GND) pins are properly connected to the system ground.

2. Ethernet Connections:

   • Connect the RJ45 connectors to the respective PHY pins for each port.
   • Ensure proper termination and matching impedance for the Ethernet lines.

3. MDIO Interface:

   • Connect the MDIO and MDC pins to the management controller for configuration and monitoring.
   • Refer to the datasheet for specific pin assignments and timing requirements.

4. LED Configuration:

   • Configure the LED control registers to enable link/activity, speed, and collision indicators.
   • Use the provided software or configuration tools to set the desired LED behavior.

5. Flow Control and Auto-Negotiation:

   • Enable full-duplex flow control and auto-negotiation through the appropriate register settings.
   • Verify that the settings are correctly applied using the management interface.

6. Jumbo Frame Support:

   • Configure the switch to support jumbo frames if required.
   • Set the maximum frame size in the relevant configuration registers.

7. Wake-on-LAN:

   • Enable Wake-on-LAN functionality through the configuration registers.
   • Ensure that the wake-up conditions are correctly set and tested.

8. ESD Protection:

   • Handle the device with care to avoid ESD damage.
   • Use ESD protection equipment and follow best practices during handling and installation.

9. Testing and Validation:

   • Perform thorough testing of the switch in your application to ensure all features are working as expected.
   • Validate the performance and reliability under various operating conditions.

For detailed information and specific register configurations, refer to the KS8721BL datasheet and application notes.

(For reference only)