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TSB41LV06A Datasheet(PDF) 7 Page - Texas Instruments

Part # TSB41LV06A
Description  IEEE 1394b SIX-PORT CABLE TRANSCEIVER/ARBITER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TSB41LV06A Datasheet(HTML) 7 Page - Texas Instruments

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TSB41LV06A
IEEE 1394a SIXPORT CABLE TRANSCEIVER/ARBITER
SLLS363A − SEPTEMBER 1999 − REVISED NOVEMBER 2000
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
TYPE
I/O
DESCRIPTION
NAME
NO.
TYPE
I/O
DESCRIPTION
C/LKON
27
CMOS
I/O
Bus manager contender programming input and link-on output. On hardware reset, this terminal
is used to set the default value of the contender status indicated during self-ID. Programming is
done by tying the terminal through a 10 k
Ω resistor to a high (contender) or low (not contender).
The resistor allows the link-on output to override the input. However, it is recommended that this
terminal should be programmed low, and that the contender status be set via the C register bit.
If the TSB41LV06A is used with an LLC that has a dedicated terminal for monitoring LKON and
also setting the contender status, then a 1-k
Ω series resistor should be placed on the LKON line
between the PHY and LLC to prevent bus contention.
Following hardware reset, this terminal is the link-on output, which is used to notify the LLC to
power-up and become active. The link-on output is a square-wave signal with a period of
approximately 163 ns (8 SYSCLK cycles) when active. The link-on output is otherwise driven
low, except during hardware reset when it is high impedance.
The link-on output is activated if the LLC is inactive (LPS inactive or the LCtrl bit cleared) and
when:
a) the PHY receives a link-on PHY packet addressed to this node,
b) the PEI (port-event interrupt) register bit is 1, or
c) any of the CTOI (configuration-timeout interrupt), CPSI (cable-power-status interrupt), or
STOI (state-timeout interrupt) register bits are 1 and the RPIE (resuming-port interrupt enable)
register bit is also 1.
Once activated, the link-on output continues active until the LLC becomes active (both LPS
active and the LCtrl bit set). The PHY also deasserts the link-on output when a bus-reset occurs
unless the link-on output would otherwise be active because one of the interrupt bits is set (i.e.,
the link-on output is active due solely to the reception of a link-on PHY packet).
NOTE: If an interrupt condition exists which would otherwise cause the link-on output to be
activated if the LLC were inactive, the link-on output is activated when the LLC subsequently
becomes inactive.
CNA
21
CMOS
O
Cable not active output. This terminal is asserted high when there are no ports receiving
incoming bias voltage.
CPS
32
CMOS
I
Cable power status input. This terminal is normally connected to cable power through a 400-k
resistor. This circuit drives an internal comparator that is used to detect the presence of cable
power. This terminal should be tied directly to DVDD supply if application does not require it to be
used.
CTL0
CTL1
7
8
CMOS
5 V tol
I/O
Control I/Os. These bidirectional signals control communication between the TSB41LV06 and
the LLC. Bus holders are built into these terminals.
D0 – D7
10, 11, 14,
15, 16, 17,
18, 19
CMOS
5 V tol
I/O
Data I/Os. These are bidirectional data signals between the TSB41LV06A and the LLC. Bus
holders are built into these terminals.
DGND
1, 2, 6, 20,
25, 26, 33,
100
Supply
Digital circuit ground terminals. These terminals should be tied together to the low impedance
circuit board ground plane.
DVDD
4, 9, 13, 22,
34, 35, 99
Supply
Digital circuit power terminals. A combination of high frequency decoupling capacitors near
each terminal are suggested, such as paralleled 0.1
µF and 0.001 µF. Lower frequency 10 µF
filtering capacitors are also recommended. These supply terminals are separated from PLLVDD
and AVDD internal to the device to provide noise isolation. They should be tied at a low
impedance point on the circuit board.
FILTER0
FILTER1
91
92
CMOS
I/O
PLL filter terminals. These terminals are connected to an external capacitance to form a
lag-lead filter required for stable operation of the internal frequency multiplier PLL running off of
the crystal oscillator. A 0.1
µF ±10% capacitor is the only external component required to
complete this filter.
ISO
31
CMOS
I
Link interface isolation control input. This terminal controls the operation of output differentiation
logic on the CTL and D terminals. If an optional Annex J type isolation barrier is implemented
between the TSB41LV06A and LLC, the ISO terminal should be tied low to enable the
differentiation logic. If no isolation barrier is implemented (direct connection), or TI Bus Holder
Isolation is implemented, the ISO terminal should be tied high to disable the differentiation logic.
For additional information refer to TI application note Serial Bus Galvanic Isolation, SLLA011.


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