KSZ9021GN TR Micrel Inc, KSZ9021GN TR Datasheet - Page 10

• Manufacturer Part Number: KSZ9021GN TR
• Description: Specifications: Number of Drivers/Receivers: 8/8 ; Type: Transceiver ; Voltage - Supply: 3.135 V ~ 3.465 V ; Package / Case: 64-VFQFN Exposed Pad ; Packaging: Tape & Reel (TR) ; Protocol: Gigabit Ethernet ; Lead Free Status: Lead Free ; RoHS Stat
• Manufacturer: Micrel Inc

Micrel, Inc.
September 2010
Pin Number
12
13
14
15
16
17
18
19
TXRXM_D
Pin Name
TXRXP_D
PHYAD1
PHYAD0
DVDDH
AVDDH
AVDDL
AVDDL
LED2 /
LED1 /
Type
I/O
I/O
I/O
I/O
P
P
P
P
(1)
Pin Function
1.2V analog V
1.2V analog V
Media Dependent Interface[3], positive signal of differential pair
1000Base-T Mode:
10Base-T / 100Base-TX Mode:
Media Dependent Interface[3], negative signal of differential pair
1000Base-T Mode:
10Base-T / 100Base-TX Mode:
3.3V analog V
LED Output:
Config Mode:
The LED2 pin is programmed by the LED_MODE strapping option (pin 55, and is
defined as follows.
Single LED Mode
Tri-color Dual LED Mode
For Tri-color Dual LED Mode, LED2 works in conjunction with LED1 (pin 19 to
indicate 10 Mbps Link and Activity.
3.3V or 2.5V digital V
LED Output:
Config Mode:
The LED1 pin is programmed by the LED_MODE strapping option (pin 55, and is
defined as follows.
Link
Link off
Link on (any speed)
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)
TXRXP_D corresponds to BI_DD+ for MDI configuration and BI_DC+ for
MDI-X configuration, respectively.
TXRXM_D corresponds to BI_DD- for MDI configuration and BI_DC- for
MDI-X configuration, respectively.
TXRXM_D is not used.
TXRXP_D is not used.
DD
DD
DD
The pull-up/pull-down value is latched as PHYAD[1] during
power-up / reset. See “Strapping Options” section for details.
The pull-up/pull-down value is latched as PHYAD[0] during
power-up / reset. See “Strapping Options” section for details.
Programmable LED2 Output /
Programmable LED1 Output /
10
DD
Pin State
H
L
Pin State
LED2
H
L
Toggle
H
H
L
Toggle
LED Definition
OFF
ON
H
H
H
L
Toggle
LED1
L
Toggle
LED Definition
LED2
OFF
ON
Blinking
OFF
OFF
ON
Blinking
M9999-091010-1.1
LED1
OFF
OFF
OFF
ON
Blinking
ON
Blinking
KSZ9021GN