KSZ8862 Micrel Semiconductor, KSZ8862 Datasheet - Page 20

• Manufacturer Part Number: KSZ8862
• Description: 2-port Ethernet Switch With Non-pci Interface And Fiber Support
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
April 2007
Pin
Number
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
Pin Name
ADSN
PWRDN
AGND
VDDA
AGND
NC
100FX/10F
L
AGND
VDDA
FXSD1
RXP1
RXM1
AGND
TXP1
TXM1
VDDATX
VDDARX
RXM2
RXP2
AGND
TXM2
TXP2
VDDA
AGND
NC
NC
ISET
AGND
VDDAP
AGND
X1
X2
RSTN
A15
Type
Ipd
Ipu
Gnd
P
Gnd
—
Ipu
Gnd
P
I
I/O
I/O
Gnd
I/O
I/O
P
P
I/O
I/O
Gnd
I/O
I/O
P
Gnd
Ipu
Ipu
O
Gnd
P
Gnd
I
O
Ipu
I
Pin Function
Address Strobe Not
For systems that require address latching, the rising edge of ADSN indicates the latching
moment of A15-A1 and AEN.
Full-chip power-down. Low = Power down; High or floating = Normal operation.
Analog ground
1.2V analog V
and capacitor.
Analog ground
No connect
Fiber mode select for port 1. 1K ohm pull-up to 3.3V for 100Base-FX, 100 ohm pull-down
to GND for 100Base-SX or 10Base-FL.
Analog ground
1.2V analog V
and capacitor.
Fiber signal detect input for port 1 in 100Base-FX fiber mode. 1K ohm pull-up to 3.3V for
port 1 in 100Base-SX or 10Base-FL fiber modes.
Port 1 physical receive (MDI) signal (+ differential) from external fiber module
Port 1 physical receive (MDI) signal (– differential) from external fiber module
Analog ground
Port 1 physical transmit (MDI) signal (+ differential) to external fiber module
Port 1 physical transmit (MDI) signal (– differential) to external fiber module
3.3V analog V
3.3V analog V
Port 2 physical receive (MDI) or transmit (MDIX) signal (- differential)
Port 2 physical receive (MDI) or transmit (MDIX) signal (+ differential)
Analog ground
Port 2 physical receive (MDI) or transmit (MDIX) signal (- differential)
Port 2 physical receive (MDI) or transmit (MDIX) signal (+ differential)
1.2 analog V
and capacitor.
Analog ground
No connect
No connect
Set physical transmits output current.
Pull-down this pin with a 3.01K 1% resistor to ground.
Analog ground
1.2V analog V
Ferrite bead and capacitor.
Analog ground
25MHz crystal or oscillator clock connection.
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
Hardware reset pin (active Low). This reset input is required minimum of 10ms low after
stable supply voltage 3.3V.
Address 15
DD
DD
DD
DD
DD
DD
input power supply from VDDCO (pin24) through external Ferrite bead
input power supply from VDDCO (pin24) through external Ferrite bead
input power supply from VDDCO (pin24) through external Ferrite bead
input power supply with well decoupling capacitors.
50ppm for either crystal or oscillator.
for PLL input power supply from VDDCO (pin24) through external
20
KSZ8862-16/32MQL
M9999-040407-3.0