KSZ9031RNX(2012) データシートの表示（PDF） - Micrel
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KSZ9031RNX Datasheet PDF : 75 Pages
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Micrel, Inc.
Pin Number
10
Pin Name
TXRXP_D
11
TXRXM_D
12
AVDDH
13
NC
14
DVDDL
15
LED2/
PHYAD1
16
DVDDH
KSZ9031RNX
Type(1)
I/O
I/O
P
–
P
I/O
Pin Function
Media Dependent Interface[3], positive signal of differential pair
1000Base-T mode:
TXRXP_D corresponds to BI_DD+ for MDI configuration and BI_DC+ for
MDI-X configuration, respectively.
10Base-T/100Base-TX mode:
TXRXP_D is not used.
Media Dependent Interface[3], negative signal of differential pair
1000Base-T mode:
TXRXM_D corresponds to BI_DD– for MDI configuration and BI_DC– for
MDI-X configuration, respectively.
10Base-T/100Base-TX mode:
TXRXM_D is not used.
3.3V/2.5V (commercial temp only) analog VDD
No connect
This pin is not bonded and can be connected to digital ground for
footprint compatibility with the Micrel KSZ9021RN Gigabit PHY.
1.2V digital VDD
LED output:
Programmable LED2 output
Config mode: The pull-up/pull-down value is latched as PHYAD[1] during
power-up/reset. See the “Strapping Options” section for details.
The LED2 pin is programmed by the LED_MODE strapping option (pin 41), and is
defined as follows:
Single-LED Mode
Link
Pin State LED Definition
Link off
H
OFF
Link on (any speed) L
ON
Tri-Color Dual-LED Mode
Link/Activity
Link off
1000 Link / No activity
1000 Link / Activity (RX, TX)
100 Link / No activity
100 Link / Activity (RX, TX)
10 Link / No activity
10 Link / Activity (RX, TX)
Pin State
LED2 LED1
H
H
L
H
Toggle H
H
L
H
Toggle
L
L
Toggle Toggle
LED Definition
LED2 LED1
OFF
OFF
ON
OFF
Blinking OFF
OFF
ON
OFF
Blinking
ON
ON
Blinking Blinking
For tri-color dual-LED mode, LED2 works in conjunction with LED1 (pin 17) to
indicate 10Mbps link and activity.
P
3.3V, 2.5V, or 1.8V digital VDD_I/O
October 2012
11
M9999-103112-1.0
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