KSZ9031MNX-EVAL Board User’s Guide
Micrel, Inc.
August 17, 2012
Rev.
1.0
10/23
4.2 Test
Point
Definition
The KSZ9031MNX-EVAL board has 12 usable test points, as defined in the following table.
Test Point
Definition
TP1
XI Clock Input (KSZ9031MNX pin 61)
TP2
CLK125_NDO Clock Output (KSZ9031MNX pin 56)
TP3
Interrupt Signal (KSZ9031MNX pin 53) with 4.7K external pull-up
TP4
AVDDL voltage – KSZ9031MNX power pins
TP5
AVDDL_PLL voltage – KSZ9031MNX power pin
TP6
DVDDL voltage – KSZ9031MNX power pins
TP7
DVDDH voltage – KSZ9031MNX power pins
TP8
AVDDH voltage – KSZ9031MNX power pins
TP9 Signal
Ground
TP10 Signal
Ground
TP11 Signal
Ground
TP12 Signal
Ground
Table 3. KSZ9031MNX-EVAL Board – Test Point Definition
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 KSZ9031MNX 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.
4.4 LED
Indicators
The KSZ9031MNX device provides two programmable LED output pins, LED2 (pin 17) and LED1
(pin 19). On the KSZ9031MNX-EVAL board, these two LED pins are connected to two sets of
LEDs to support two LED configurations: Single LED mode and Tri-color Dual LED mode.
4.4.1
Single LED Mode
To enable Single LED mode,
•
Close pins (1, 2) of jumpers JP7 and JP8 to select D2 and D3, respectively for the single
LEDs.
•
Close pins (1, 2) of jumper JP9 to set the LED_MODE strap-in for Single LED mode.
•
Power-up the board.
