KSZ9021GN TR Micrel Inc, KSZ9021GN TR Datasheet - Page 11

• 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
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin Name
GTX_CLK
DVDDH
DVDDL
DVDDL
TX_ER
TXD0
TXD1
TXD2
TXD3
TXD4
TXD5
TXD6
TXD7
Type
P
P
P
I
I
I
I
I
I
I
I
I
I
(1)
Pin Function
Single LED Mode
Tri-color Dual LED Mode
For Tri-color Dual LED Mode, LED1 works in conjunction with LED2 (pin 17 to
indicate 10 Mbps Link and Activity.
1.2V digital V
GMII Mode:
MII Mode:
GMII Mode:
MII Mode:
GMII Mode:
MII Mode:
GMII Mode:
MII Mode:
1.2V digital V
GMII Mode:
MII Mode:
GMII Mode:
MII Mode:
GMII Mode:
MII Mode:
GMII Mode:
MII Mode:
3.3V or 2.5V digital V
GMII Mode:
MII Mode:
If GMII / MII MAC does not provide the TX_ER output signal, this pin should be
tied low.
GMII Mode:
Activity
No Activity
Activity (RX, TX)
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)
DD
DD
GMII TXD0 (Transmit Data 0) Input
MII TXD0 (Transmit Data 0) Input
GMII TXD1 (Transmit Data 1) Input
MII TXD1 (Transmit Data 1) Input
GMII TXD2 (Transmit Data 2) Input
MII TXD2 (Transmit Data 2) Input
GMII TXD3 (Transmit Data 3) Input
MII TXD3 (Transmit Data 3) Input
GMII TXD4 (Transmit Data 4) Input
This pin is not used and can be driven high or low.
GMII TXD5 (Transmit Data 5) Input
This pin is not used and can be driven high or low.
GMII TXD6 (Transmit Data 6) Input
This pin is not used and can be driven high or low.
GMII TXD7 (Transmit Data 7) Input
This pin is not used and can be driven high or low.
GMII TX_ER (Transmit Error) Input
MII TX_ER (Transmit Error) Input
GMII GTX_CLK (Transmit Reference Clock) Input
11
DD
H
Pin State
Toggle
Pin State
LED2
H
L
Toggle
H
H
L
Toggle
LED Definition
OFF
Blinking
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