LAN9220-ABZJ SMSC, LAN9220-ABZJ Datasheet - Page 19

• Manufacturer Part Number: LAN9220-ABZJ
• Description: Ethernet ICs 16Bit Single Chip Ethernet Controller
• Manufacturer: SMSC
• Type: Single Chip MAC and PHY Controllerr

Specifications of LAN9220-ABZJ

• Ethernet Connection Type: 10 Base-T, 100 Base-TX
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Product: Ethernet Controllers
• Number Of Transceivers: 1
• Standard Supported: 802.3, 802.3u
• Data Rate: 10 MB, 100 MB
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 0 V
• Supply Current (max): 85 mA
• Maximum Operating Temperature: + 70 C
• Package / Case: TQFP-100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
Datasheet
SMSC LAN9220
Activity Indicator),
Common Ground
General Purpose
+3.3V Regulator
Variable Voltage
nLED1 (Speed
nLED2 (Link &
nLED3 (Full-
Power Supply
+3.3V Analog
+1.8V Analog
Core Voltage
Decoupling
Indicator
I/O Power
Indicator),
I/O data,
Duplex
NAME
Power
Power
Test
).
VDD18CORE
VDD33REG
VDDVARIO
GPIO[2:0]/
nLED[3:1]
SYMBOL
VDD33A
VDD18A
TEST
VSS
Table 2.4 System and Power Signals (continued)
BUFFER
VOD12
VO12/
TYPE
(PD)
VIS
VIS/
P
P
P
P
P
P
DATASHEET
19
1 pad
PINS
NUM
1
3
4
1
3
1
2
Variable Voltage I/O logic power supply pins.
Common Ground
+3.3V analog power supply pins.
+1.8V analog power supply pin. This pin must
+1.8 V from internal core regulator. Both pins
Reserved for internal test purposes only.
Note:
General Purpose I/O data: These three
general-purpose signals are fully programmable
as either push-pull output, open-drain output or
input by writing the GPIO_CFG configuration
register in the CSR’s. They are also multiplexed
as GP LED connections.
GPIO signals are Schmitt-triggered inputs.
When configured as LED outputs these signals
are open-drain.
nLED1 (Speed Indicator). This signal is driven
low when the operating speed is 100Mbs,
during auto-negotiation and when the cable is
disconnected. This signal is driven high only
during 10Mbs operation.
nLED2 (Link & Activity Indicator). This signal
is driven low (LED on) when the LAN9220
detects a valid link. This signal is pulsed high
(LED off) for 80mS whenever transmit or
receive activity is detected. This signal is then
driven low again for a minimum of 80mS, after
which time it will repeat the process if TX or RX
activity is detected. Effectively, LED2 is
activated solid for a link. When transmit or
receive activity is sensed LED2 will flash as an
activity indicator.
nLED3 (Full-Duplex Indicator). This signal is
driven low when the link is operating in full-
duplex mode.
Refer to
on page 139
+3.3V power supply for internal +1.8V regulator.
be connected externally to VDD18CORE.
must be connected together externally. Each
pin requires a 0.01uF decoupling capacitor. In
addition, pin 2 requires a bulk 4.7uF capacitor
(<2 Ohm ESR) in parallel. These pins must not
be used to supply power to other external
devices.
Section 7.2, "Operating Conditions**,"
When operating at a reduced
VDDVARIO voltage (less than 3.0V),
this pin must be connected to ground
or pulled-low with an external resistor.
When VDDVARIO = 3.3V, this pin may
be left unconnected. Refer to
2.2, "External Pull-Up/Pull-Down
Resistors"
for additional details.
DESCRIPTION
for more information.
Revision 2.7 (03-15-10)
Section