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TSB41BA3BTPFPEP Fiches technique(PDF) 11 Page - Texas Instruments

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No de pièce TSB41BA3BTPFPEP
Description  IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER  
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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TSB41BA3BTPFPEP Fiches technique(HTML) 11 Page - Texas Instruments

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TSB41BA3BEP
IEEE 1394b THREEPORT CABLE TRANSCEIVER/ARBITER
SGLS362—MAY 2006
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
Terminal Functions (Continued)
TERMINAL
NAME
TYPE
PFP
NO.
I/O
DESCRIPTION
S3
CMOS
33
I
Port sleep/mode selection terminal 3. On hardware reset, this terminal when used with the other five
selection pins allows the user to select the speed and mode of the ports. See Table 1. Programming
is done by tying the terminals high through a 1-k
Ω or smaller resistor or by tying directly to ground
through a 1-k
Ω or smaller resistor. A bus holder is built into this terminal.
S4
CMOS
32
I
Port sleep/mode selection terminal 4. On hardware reset, this terminal when used with the other five
selection pins allows the user to select the speed and mode of the ports. See Table 1. Programming
is done by tying the terminals high through a 1-k
Ω or smaller resistor or by tying directly to ground
through a 1-k
Ω or smaller resistor. A bus holder is built into this terminal.
S5_LKON
CMOS
2
I/O
Port sleep/mode selection terminal 5 and link-on output. This terminal can be connected to the link-
on input terminal of the LLC through a 1-k
Ω resistor if the link-on input is available on the link layer.
On hardware reset, this terminal when used with the other five selection pins allows the user to se-
lect the speed and mode of the ports. See Table 1. A bus holder is built into this terminal.
After hardware reset, this terminal is the link-on output, which notifies the LLC or other power-up
logic to power up and become active. The link-on output is a square wave signal with a period of
approximately 163 ns (8 PCLK 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 (the LPS input inactive or the LCtrl bit cleared)
and when one of the following occrurs:
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-time-out interrupt), CPSI (cable-power-status interrupt), or
d) The PHY is power-cycled and the power class is 0 through 4
Once activated, the link-on output is active until the LLC becomes active (both the LPS input active
and the LCtrl bit set). The PHY also deasserts the link-on output when a bus-reset occurs unless the
link-on output is otherwise active because one of the interrupt bits is set (that is, the link-on output is
active due solely to the reception of a link-on PHY packet).
In the case of power-cycling the PHY, the LKON signal must stop after 167
µs if the above conditions
have not been met.
NOTE: If an interrupt condition exists which otherwise causes the link-on output to be activated if
the LLC were inactive, then the link-on output is activated when the LLC subsequently becomes
inactive.
TESTM
CMOS
78
I
Test control input. This input is used in the manufacturing test of the TSB41BA3B-EP. For normal
use, this terminal must be pulled high through a 1-k
Ω resistor to VDD.
TPA0−
TPA0+
TPB0−
TPB0+
Cable
45,
46,
41,
42
I/O
Port 0 twisted-pair differential-signal terminals. Board traces from each pair of positive and
negative differential signal terminals must be kept matched and as short as possible to the
external load resistors and to the cable connector. Request the S800 1394b layout
recommendations document from your Texas Instruments representative.
TPA1−
TPA1+
TPB1−
TPB1+
Cable
52
53
48
49
I/O
Port 1 twisted-pair differential-signal terminals. Board traces from each pair of positive and
negative differential signal terminals must be kept matched and as short as possible to the
external load resistors and to the cable connector. Request the S800 1394b layout
recommendations document from your Texas Instruments representative.


Numéro de pièce similaire - TSB41BA3BTPFPEP

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TSB41BA3BTPFPEP TI1-TSB41BA3BTPFPEP Datasheet
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[Old version datasheet]   IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER
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