KSZ8873RLL Micrel Inc, KSZ8873RLL Datasheet - Page 11

• Manufacturer Part Number: KSZ8873RLL
• Description: IC ETHERNET SWITCH 3PORT 64-LQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8873RLL

• Data Rate: 100Mbps
• Controller Type: Ethernet Switch Controller
• Interface: RMII
• Voltage - Supply: 1.8V, 2.5V, 3.3V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• No. Of Ports: 3
• Ethernet Type: IEEE 802.3u
• Supply Current: 115mA
• Supply Voltage Range: 2.5V, 3.3V
• Digital Ic Case Style: LQFP
• No. Of Pins: 64
• Svhc: No SVHC (15-Dec-2010)
• Base: RoHS Compliant
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Fiber Support: No
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII
• Power Supply Type: Analog/Digital
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 1.89/3.465V
• Operating Temperature Classification: Commercial
• Interface Type: MII, RMII
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-3461

Micrel, Inc.
Pin Description and I/O Assignment
September 2009
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
RXM1
RXP1
AGND
TXM1
TXP1
VDDA_3.3
AGND
ISET
VDDA_1.8
RXM2
RXP2
AGND
TXM2
TXP2
FXSD2
PWRND
X1
X2
SMTXEN3
SMTXD33/
EN_REFCLKO_3
SMTXD32/
NC
SMTXD31
SMTXD30
GND
VDDIO
SMTXC3/
REFCLKI_3
SMTXER3/
MII_LINK_3
Pin Name
Type
I/O
I/O
Gnd
I/O
I/O
P
Gnd
O
P
I/O
I/O
Gnd
I/O
I/O
I
Ipu
I
O
I
lpu/I
I
I
I
Gnd
P
I/O
I
(1)
Description
Physical receive or transmit signal (– differential)
Physical receive or transmit signal (+ differential)
Analog ground
Physical transmit or receive signal (– differential)
Physical transmit or receive signal (+ differential)
3.3V analog V
Analog ground.
Set physical transmit output current.
Pull-down this pin with a 11.8K 1% resistor to ground.
1.8 analog VDD input power supply from VDDCO (pin 56) through
external Ferrite bead and capacitor.
Physical receive or transmit signal (– differential)
Physical receive or transmit signal (+ differential)
Analog ground.
Physical transmit or receive signal (– differential)
Physical transmit or receive signal (+ differential)
MLL/RLL: connect to analog ground.
FLL: Fiber signal detect / factory test pin
Chip power down input (active low).
25 or 50MHz crystal/oscillator clock connections.
Pins (X1, X2) connect to a crystal. If an oscillator is used, X1 connects to
a 3.3V tolerant oscillator and X2 is a no connect.
Note: Clock is +/- 50ppm for both crystal and oscillator.
Switch MII transmit enable
MLL/FLL: Switch MII transmit data bit 3
RLL: Strap option: RMII mode Clock selection
PU = Enable REFCLKO_3 output
PD = Disable REFCLKO_3 output
MLL/FLL: Switch MII transmit data bit 2
RLL: No connection
Switch MII transmit data bit 1
Switch MII transmit data bit 0
Digital ground
3.3V, 2.5V or 1.8V digital VDD input power supply for IO with well
decoupling capacitors.
MLL/FLL: Switch MII transmit clock (MII modes only)
RLL: Reference clock input
Note: pull up or down is needed if internal reference clock is used in RLL.
Switch MII transmit error in MII MAC mode
MII link indicator from host in MII PHY mode. High = No link.
Output in PHY MII mode and SNI mode
Input in MAC MII and RMII mode.
11
DD
KSZ8873MLL/FLL/RLL
M9999-092309-1.2