KSZ8862-100FX-EVAL Просмотр технического описания (PDF) - Micrel
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KSZ8862-100FX-EVAL Datasheet PDF : 125 Pages
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Micrel, Inc.
KSZ8862-16/32MQL
Pin
Number
34
35
Pin Name
DGND
ADSN
Type
Gnd
Ipd
36
PWRDN
Ipu
37
AGND
Gnd
38
VDDA
P
39
AGND
Gnd
40
NC
—
41
100FX/10F Ipu
L
42
AGND
Gnd
43
VDDA
P
44
FXSD1
I
45
RXP1
I/O
46
RXM1
I/O
47
AGND
Gnd
48
TXP1
I/O
49
TXM1
I/O
50
VDDATX P
51
VDDARX P
52
RXM2
I/O
53
RXP2
I/O
54
AGND
Gnd
55
TXM2
I/O
56
TXP2
I/O
57
VDDA
P
58
AGND
Gnd
59
NC
Ipu
60
NC
Ipu
61
ISET
O
62
AGND
Gnd
63
VDDAP
P
64
AGND
Gnd
65
X1
I
66
X2
O
67
RSTN
Ipu
August 2010
Pin Function
Digital IO ground
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 VDD input power supply from VDDCO (pin24) through external Ferrite bead
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 VDD input power supply from VDDCO (pin24) through external Ferrite bead
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 VDD input power supply with well decoupling capacitors.
3.3V analog VDD
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 transmit (MDI) or receive (MDIX) signal (- differential)
Port 2 physical transmit (MDI) or receive (MDIX) signal (+ differential)
1.2 analog VDD input power supply from VDDCO (pin24) through external Ferrite bead
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 VDD for PLL input power supply from VDDCO (pin24) through external
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 50ppm for either crystal or oscillator.
Hardware reset pin (active Low). This reset input is required minimum of 10ms low after
stable supply voltage 3.3V.
20
M9999-081310-3.1
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