TMC2005-JT SMSC Corporation, TMC2005-JT Datasheet - Page 8

• Manufacturer Part Number: TMC2005-JT
• Description: ARCNET 5 Port HUB Controller
• Manufacturer: SMSC Corporation

ARCNET 5 Port HUB Controller
Datasheet
Operating Mode Setup
PLL
Revision 1.0 (01-30-06)
Data rate
setup
Noise cut
mode
Big jitter
mode
Open drain
mode
FEATURE
FEATURE
TX Port
TX Port
Mode Setup
FEATURE
CKM [0:2]
NAME
Polarity
nEXTOD
Setup
AGS
RO
NAME
nMBA
nMBB
nMBE
LP
nBJA
nBJB
nBJE
MA, MB, ME
OUTPUT
OUTPUT
OUTPUT
OUTPUT
LA, LB, LE
INPUT/
INPUT/
INPUT
INPUT
INPUT
INPUT
INPUT
NAME
DATASHEET
Terminal to setup the data rate of TMC2005.
CKM2 CKM1 CKM0 DIVISOR MULTIPLIER
0: Cut off noise from received data
1: Don’t cut off noise
Setup “0” normally.
Setup a jitter filter feature.
0: Set EXTTX as open drain output and use as Ext.
1: Set EXTTX as normal output and use as 5
Select a pulse as reference phase used by DPLL.
0: 2
1: 1
Setup a the use of EXTTX port.
External clock is 20MHz.
Refer to “VARIOUS SETUP”
0
0
0
0
1
1
1
1
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.
Using PLL: Connect to loop filter.
Using no PLL: Connect to ground.
nd
st
INPUT/OUTPUT
Page 8
pulse (normal mode)
pulse (big jitter mode)
0
0
1
1
0
0
1
1
INPUT
INPUT
1
0
1
1
0
1
0
0
Reserved
16
8
4
2
1
1
1
DESCRIPTION
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
x2
x1
x1
x1
x1
x1
x4
Reserved
DESCRIPTION
156.25 Kbps
312.5 Kbps
1.25 Mbps
625 Kbps
2.5 Mbps
10 Mbps
5 Mbps
Reserved
th
SPEED
port.
SMSC TMC2005-JT