12
Desktop Transceiver SFX-TAP4_2/C, V0.1, Technical Description
The pins of the PwrCtrl connector are
not
protected against short circuit and
wrong polarization! The maximum current consumption must not exceed 100
mA in the “Left Position” and 50 mA in the “Right Position”.
4.7 Boundary Scan Interface
The Desktop Transceiver SFX-TAP4/C (SFX-TAP2/C) allows Boundary Scan Test according to
the Std IEEE 1149.1.
It is not allowed to connect or disconnect the Interface Connector (TAP/PIP
SCSI 68) during power ON state. Otherwise short circuit between output
voltages and GND may happen.
It is recommended to design the Testbus signals as twisted pair with GND.
Note: Connect the TDI line(s) of the Desktop Transceiver SFX-TAP4/C (SFX-TAP2/C) with TDO
lines of the UUT(s). Connect TDO line(s) of the SFX-TAP4/C (SFX-TAP2/C) with the TDI
input(s) of the UUT.
4.8
Output Driver
The output driver for the TAPs is realized by the CION
[2]
chip. The voltage programming is
done by changing the supply voltage of it. The output current changes over the supply voltage,
see also data sheet
[2]
.
4.8.1 Absolute Maximum Ratings
Supply Voltage I/O Pads (V
CC
Pads)
-0.5V to +5.5V
DC Input Voltage I/O Pads (V
I
Pads)
-0.5V to +5.5V
Output Voltage I/O Pads (V
O
Pads)
Outputs 3-Stated
-0.5V to +5.5V
Outputs active
-0.5V to V
CC
+0.5V
DC Output Source/ Sink Current
I/O Pads (I
OH
/I
OL
)
±
135mA
DC VCC or GND Current per Supply Pin
(I
CC
or GND)
±
100mA
Storage temperature (T
STG
)
-65°C to +100°C
Maximum power dissipation at T
A
= 60
°
C
1.2W
Table a
bsolute maximum ratings
: See
[2]
Summary of Contents for SFX-TAP2/C
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