KS8995FQ Ver la hoja de datos (PDF) - Micrel

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Fabricante

KS8995FQ

Integrated 5-Port 10/100 Managed Switch

Micrel 

Micrel, Inc.

KS8995MA/FQ

Pin Description − By Numbers (Continued)

Pin Number Pin Name Type(1) Port Pin Function(2)

82

SMRXD1

Ipd/O

Switch MII receive bit 1. Strap option: PD (default) = Switch MII in 100Mbps mode; PU

= Switch MII in 10Mbps mode.

Switch MII receive bit 0; Strap option: LED mode; PD (default) = mode 0; PU = mode 1.

See “Register 11”. Mode 0, link at:

100/Full LEDx[2,1,0]=0,0,0

100/Half LEDx[2,1,0]=0,1,0

10/Full LEDx[2,1,0]=0,0,1

10/Half LEDx[2,1,0]=0,1,1

Mode 1, link at

83

SMRXD0

Ipd/O

100/Full LEDx[2,1,0]=0,1,0

10/Full LEDx[2,1,0]=1,0,0

100/Half LEDx[2,1,0]=0,1,1

10/Half LEDx[2,1,0]=1,0,1

Mode 0

Mode 1

LEDX_2

Lnk/Act

100Lnk/Act

LEDX_1

Fulld/Col

10Lnk/Act

LEDX_0

Speed

Full duplex

84

SCOL

Ipd/O

Switch MII collision detect.

85

SCRS

Ipd/O

Switch mode carrier sense.

86

SCONF1

Ipd

Dual MII configuration pin. For the Switch MII, KSZ8995MA supports both MAC mode

and PHY mode, KSZ8995FQ supports PHY mode only.

Pin# (91, 86, 87):

Switch MII

PHY [5] MII

000

Disable, Otri

Disable, Otri

001

PHY Mode MII

Disable, Otri

010

MAC Mode MII

Disable, Otri

011

PHY Mode SNI

Disable, Otri

100

Disable

Disable

101

PHY Mode MII

PHY Mode MII

110

MAC Mode MII

PHY Mode MII

111

PHY Mode SNI

PHY Mode MII

87

SCONF0

Ipd

Dual MII configuration pin.

88

GNDD

GND

Digital ground.

89

VDDC

P

1.8V digital core VDD.

90

LED5-2

Ipu/O

5

LED indicator 2. Strap option: aging setup. See “Aging” section.

PU (default) = aging enable; PD = aging disable.

91

LED5-1

Ipu/O

5

LED indicator 1. Strap option: PU (default): enable PHY[5] MII I/F. PD: tristate all

PHY[5] MII output. See “Pin 86 SCONF1.”

Notes:

1.

2.

P = Power supply.

I = Input.

O = Output.

I/O = Bidirectional.

GND = Ground.

Ipu = Input w/internal pull-up.

Ipd = Input w/internal pull-down.

Ipd/O = Input w/internal pull-down during reset, output pin otherwise.

Ipu/O = Input w/internal pull-up during reset, output pin otherwise.

NC = No connect.

PU = Strap pin pull-up.

PD = Strap pull-down.

Otri = Output tristated.

Fulld = Full duplex

October 2011

17

M9999-102611-3.0

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