TMC2005-JT データシートの表示（PDF） - SMSC -> Microchip

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TMC2005-JT

ARCNET 5 Port HUB Controller

SMSC -> Microchip 

ARCNET 5 Port HUB Controller

Datasheet

TX Port

TX Port

FEATURE

Polarity

Setup

Mode Setup

NAME

LA, LB, LE

MA, MB, ME

INPUT/OUTPUT

INPUT

INPUT

DESCRIPTION

mode.

The pulse is always active Low.

Setup the polarity of TXENA

[0:1], TXENB [0:1], EXTTX.

0 : active L

1: active H

Setup the mode of TXENA [0:1],

TXENB [0:1], EXTTX.

0: Output TX pulse. (It is

equivalent to nTXEN “OR”

nP1BAK)

1: Output TX enable

Operating Mode Setup

FEATURE

Data rate

setup

NAME

CKM [0:2]

Noise cut

mode

Big jitter

mode

nMBA

nMBB

nMBE

nBJA

nBJB

nBJE

Open drain nEXTOD

mode

INPUT/

OUTPUT

INPUT

DESCRIPTION

Terminal to setup the data rate of TMC2005.

CKM2 CKM1 CKM0 DIVISOR MULTIPLIER SPEED

0 0 0 16

x1

156.25 Kbps

00 1 8

x1

312.5 Kbps

01 0 4

x1

625 Kbps

01 1 2

x1

1.25 Mbps

10 0 1

x1

2.5 Mbps

10 1 1

x2

5 Mbps

1 1 0 Reserved Reserved Reserved

11 1 1

x4

10 Mbps

INPUT

External clock is 20MHz.

Refer to “VARIOUS SETUP”

0: Cut off noise from received data

1: Don’t cut off noise

INPUT

INPUT

Setup “0” normally.

Setup a jitter filter feature.

Select a pulse as reference phase used by DPLL.

0: 2nd pulse (big jitter mode)

1: 1st pulse (normal mode)

Setup a the use of EXTTX port.

0: Set EXTTX as open drain output and use as Ext.

1: Set EXTTX as normal output and use as 5th port.

PLL

FEATURE NAME

LP

RO

AGS

INPUT/

OUTPUT

OUTPUT

OUTPUT

INPUT

DESCRIPTION

Using PLL: Connect to an external condenser

“C1” for loop filter.

Using no PLL: must be open.

VCO output

Using PLL: Connect to an external resistor “R0” for

loop filter.

Using no PLL: must be open.

Analog sense input.

Revision 1.0 (01-30-06)

Using PLL: Connect to loop filter.

Using no PLL: Connect to ground.

Page 8

DATASHEET

SMSC TMC2005-JT

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