KS8995XA 데이터 시트보기 (PDF) - Micrel

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KS8995XA

Integrated 5-Port 10/100 QoS Switch

Micrel 

KS8995XA

Micrel, Inc.

Pin Number

63

64

65

Pin Name

PMRXD2

PMRXD1

PMRXD0

66

PMRXER

67

PCRS

68

PCOL

69

SMTXEN

70

SMTXD3

71

SMTXD2

72

SMTXD1

73

SMTXD0

74

SMTXER

75

SMTXC

76

GNDD

77

VDDIO

78

SMRXC

79

SMRXDV

80

SMRXD3

81

SMRXD2

82

SMRXD1

83

SMRXD0

84

SCOL

85

SCRS

Type(1)

Ipd/O

Ipd/O

Ipd/O

Ipd/O

Ipd/O

Ipd/O

Ipd

Ipd

Ipd

Ipd

Ipd

Ipd

I/O

Gnd

P

I/O

Ipd/O

Ipd/O

Ipd/O

Ipd/O

Ipd/O

Ipd/O

Ipd/O

Port

5

5

5

5

5

5

Pin Function(2)

PHY[5] MII receive bit 2. Strap option: PD (default) = disable back

pressure; PU = enable back pressure.

PHY[5] MII receive bit 1. Strap option: PD (default) = drop excessive

collision packets; PU = does not drop excessive collision packets.

PHY[5] MII receive bit 0. Strap option: PD (default) = disable

aggressive back-off algorithm in half-duplex mode; PU = enable for

performance enhancement.

PHY[5] MII receive error. Strap option: PD (default) = packet size

1518/1522 bytes; PU = 1536 bytes.

PHY[5] MII carrier sense/force duplex mode. See “Register 28.”

PHY[5] MII collision detect/force flow control. See “Register 18.”

Switch MII transmit enable.

Switch MII transmit bit 3.

Switch MII transmit bit 2.

Switch MII transmit bit 1.

Switch MII transmit bit 0.

Switch MII transmit error.

Switch MII transmit clock. PHY or MAC mode MII.

Digital ground.

3.3V digital VDD for digital I/O circuitry.

Switch MII receive clock. PHY or MAC mode MII.

Switch MII receive data valid.

Switch MII receive bit 3. Strap option: PD (default) = Disable Switch MII

full-duplex flow control; PU = Enable Switch MII full-duplex flow control.

Switch MII receive bit 2. Strap option: PD (default) = Switch MII in

full-duplex mode; PU = Switch MII in half-duplex mode.

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: see “Register 11[1].”

Switch MII collision detect.

Switch mode carrier sense.

Notes:

1. 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.

2. PU = Strap pin pull-up.

PD = Strap pull-down.

Otri = Output tristated.

M9999-051305

10

May 2005

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