KSZ9021GN TR Micrel Inc, KSZ9021GN TR Datasheet - Page 12

• 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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
CLK125_EN
Pin Name
RX_CLK /
PHYAD2
RX_DV /
MODE3
DVDDH
MODE2
MODE1
MODE0
DVDDH
DVDDL
DVDDL
RX_ER
TX_EN
RXD3 /
RXD2 /
RXD1 /
RXD0 /
RXD7
RXD6
RXD5
RXD4
MDC
CRS
Type
I/O
I/O
I/O
I/O
I/O
I/O
Ipu
O
O
O
P
O
O
P
P
P
O
I
(1)
Pin Function
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:
Config Mode:
3.3V or 2.5V digital V
GMII Mode:
MII Mode:
Config Mode:
1.2V digital V
GMII Mode:
MII Mode:
Config Mode:
GMII Mode:
MII Mode:
Config Mode:
GMII Mode:
MII Mode:
Config Mode:
3.3V or 2.5V digital V
GMII Mode:
MII Mode:
GMII Mode:
MII Mode:
Config Mode:
GMII Mode:
MII Mode:
Management Data Clock Input
This pin is the input reference clock for MDIO (pin 51)
DD
DD
GMII TX_EN (Transmit Enable) Input
MII TX_EN (Transmit Enable) Input
GMII RXD7 (Receive Data 7) Output
This pin is not used and is driven low.
GMII RXD6 (Receive Data 6) Output
This pin is not used and is driven low.
GMII RXD5 (Receive Data 5) Output
This pin is not used and is driven low.
GMII RXD4 (Receive Data 4) Output
This pin is not used and is driven low.
GMII RXD3 (Receive Data 3) Output
MII RXD3 (Receive Data 3) Output /
The pull-up/pull-down value is latched as MODE3 during
power-up / reset. See “Strapping Options” section for details.
GMII RXD2 (Receive Data 2) Output
MII RXD2 (Receive Data 2) Output) /
The pull-up/pull-down value is latched as MODE2 during
power-up / reset. See “Strapping Options” section for details.
GMII RXD1 (Receive Data 1) Output
MII RXD1 (Receive Data 1) Output /
The pull-up/pull-down value is latched as MODE1 during
power-up / reset. See “Strapping Options” section for details.
GMII RXD0 (Receive Data 0) Output
MII RXD0 (Receive Data 0) Output /
The pull-up/pull-down value is latched as MODE0 during
power-up / reset. See “Strapping Options” section for details.
GMII RX_DV (Receive Data Valid) Output
MII RX_DV (Receive Data Valid) Output /
Latched as CLK125_NDO Output Enable during power-up /
reset. See “Strapping Options” section for details.
GMII RX_ER (Receive Error) Output
MII RX_ER (Receive Error) Output
GMII RX_CLK (Receive Reference Clock) Output
MII RX_CLK (Receive Reference Clock) Output /
The pull-up/pull-down value is latched as PHYAD[2] during
power-up / reset. See “Strapping Options” section for details.
GMII CRS (Carrier Sense) Output
MII CRS (Carrier Sense) Output
12
DD
DD
M9999-091010-1.1
KSZ9021GN