ksz8021rnli Micrel Semiconductor, ksz8021rnli Datasheet - Page 40

• Manufacturer Part Number: ksz8021rnli
• Description: 10base-t/100base-tx Phy With Rmii Support
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
KSZ8021RNL / KSZ8031RNL
Reference Circuit for LED Strapping Pin
The pull-up, float and pull-down reference circuits for the LED0/ANEN_SPEED strapping pin are shown in Figure 15 for
3.3V and 2.5V VDDIO.
Figure 15. Reference Circuits for LED Strapping Pin
For 1.8V VDDIO, LED indication support is not recommended due to the low voltage. Without the LED indicator, the
ANEN_SPEED strapping pin is functional with 4.7K pull-up to 1.8V VDDIO or float for a value of ‘1’, and with 1.0K pull-
down to ground for a value of ‘0’.
August 2010
40
M9999-082710-1.0