KSZ8993M データシートの表示（PDF） - Micrel

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KSZ8993M

Integrated 3-Port 10/100 Managed Switch with PHYs

Micrel 

Micrel, Inc.

KSZ8993M/ML

Pin Number

104

105

Pin Name

PV21

PV23

106

DGND

107

VDDIO

108

PV12

109

PV13

110

P3_1PEN

111

P2_1PEN

112

P1_1PEN

113

P3_TXQ2

Note:

1. P = Power supply.

Gnd = Ground.

Ipu = Input w/ internal pull-up.

October 2008

Type (1)

Ipu

Ipu

Gnd

P

Ipu

Ipu

Ipd

Ipd

Ipd

Ipd

Description

Port 2 port-based VLAN mask bits – Use to select which

ports may transmit packets received on port 2.

PV21 = 1, port 1 may transmit packets received on port 2

PV21 = 0, port 1 will not transmit any packets received on

port 2

PV23 = 1, port 3 may transmit packets received on port 2

PV23 = 0, port 3 will not transmit any packets received on

port 2

Digital ground

3.3V digital VDD

Port 1 port-based VLAN mask bits – Use to select which

ports may transmit packets received on port 1.

PV12 = 1, port 2 may transmit packets received on port 1

PV12 = 0, port 2 will not transmit any packets received on

port 1

PV13 = 1, port 3 may transmit packets received on port 1

PV13 = 0, port 3 will not transmit any packets received on

port 1

Enable 802.1p priority classification on port 3 ingress

1 = enable

0 = disable

Enable is from the receive perspective. If 802.1p processing

is disabled or there is no tag, priority is determined by the

P3_PP pin.

Enable 802.1p priority classification on port 2 ingress

1 = enable

0 = disable

Enable is from the receive perspective. If 802.1p processing

is disabled or there is no tag, priority is determined by the

P2_PP pin.

Enable 802.1p priority classification on port 1 ingress

1 = enable

0 = disable

Enable is from the receive perspective. If 802.1p processing

is disabled or there is no tag, priority is determined by the

P1_PP pin.

Select transmit queue split on port 3

1 = split

0 = no split

The split sets up high and low priority queues. Packet priority

classification is done on ingress ports, via port-based, 802.1p

or TOS based scheme. The priority enabled queuing on port 3

is set by P3_TXQ2.

Ipd = Input w/ internal pull-down.

17

M9999-020606

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