KSZ9021RL-EVAL Board User’s Guide
Micrel, Inc.
March 20, 2009
Rev.
1.0
9/24
4.2 Test
Point
Definition
The KSZ9021RL-EVAL board has 17 usable test points, as defined in the following table.
Test Point
Definition
TP4
Interrupt Signal (KSZ9021RL pin 51) with 4.7K external pull-up
TP7
AVDDH voltage – KSZ9021RL power pins
TP12
AVDDL voltage – KSZ9021RL power pins
TP14
DVDDL – KSZ9021RL power pins
TP15
AVDDL_PLL – KSZ9021RL power pin
TP16
DVDDH – KSZ9021RL power pins
TP17 Signal
Ground
TP18 Signal
Ground
TP19 Signal
Ground
TP20 Signal
Ground
TP24 Signal
Ground
TP28
25MHz reference clock input to XI (KSZ9021RL pin 60); Use to
apply reference clock from external clock generator/oscillator;
Test point is located on solder side of PCB.
TP33
Exposed ground connection to KSZ9021RL E-pad (bottom of
chip); Test point is located on solder side of PCB.
TP34
End point for board trace delay for RGMII RX_CLK output clock;
Refer to KSZ9021RL Socket Board Schematic for more details.
TP35
1.5ns (10000 mils) board trace delay for RGMII RX_CLK output
clock, starting from resistor R144; Refer to KSZ9021RL Socket
Board Schematic for more details.
TP36-TP37
375ps (2500 mils) board trace delay for RGMII RX_CLK output
clock; Refer to KSZ9021RL Socket Board Schematic for more
details.
Table 3. KSZ9021RL-EVAL Board – Test Point Definition
The following test points are reserved for factory use only:
TP22, TP23, TP25, TP26, TP27, TP29, TP30, TP31, TP32
4.3 RJ-45 Copper Interface
The RJ-45 copper interface (RJ1) connects to standard unshielded twisted pair (UTP) CAT-5
Ethernet cable to interface with 10Base-T/100Base-TX/1000Base-T network devices.
The KSZ9021RL copper media interface can automatically detect and correct for differential pair
misplacements and polarity reversals, and correct propagation delays and re-sync timing
between the four differential pairs, as specified in the IEEE 802.3 standard for 1000Base-T
operation.
Auto MDI/MDI-X is supported for automatic detection and correction for straight and crossover
cables when interfacing to link partners with fixed MDI or MDI-X setting.
