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UCC5696 Datasheet(PDF) 5 Page - Texas Instruments

Part No. UCC5696
Description  27 LINE LVD ONLY SCSI TERMINATOR FOR SPI-5
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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UCC5696 Datasheet(HTML) 5 Page - Texas Instruments

 
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UCC5696
SLVS406B – JUNE 2002 – REVISED JUNE 2003
5
www.ti.com
Terminal Functions
TERMINAL
FUNCTION
NAME
NO.
I/O
FUNCTION
DIFSENS
15
O
The SCSI bus DIFF SENSE line detects what types of devices are connected to the SCSI bus.
DISCNT
52
I
The disconnect pin shuts down the terminator when it is not at the end of the bus. The disconnect pin low en-
ables the terminator.
DIFFB
16
I
Senses the bus mode, a 50-Hz filter is required, 0.1
µF to ground and 20 kΩ to the SCSI bus DIFF SENSE line
with internal SPI-3 100-ms to 310-ms delay.
HVD
14
O
A high-voltage differential voltage level has been detected on the DIFF B pin. HVD pin high indicates that the
terminator is in high impedance mode.
ICBD
50
I/O
I2C bus data. Serial control for impedance and bias current adjustments.
ICBC
51
I
I2C bus clock.
ICAD0–6
I
I2C address.
Line n–
O
Negative line for differential applications of the SCSI bus.
Line n+
O
Positive line for differential applications of the SCSI bus.
LVD
13
O
A low-voltage differential voltage level has been detected on the DIFF B pin. LVD pin high indicates that the ter-
minator is in LVD mode.
PVDD
8
I
Power supply for the regulator. PVDD should be tied to TERMPWR pin.
REG
10
O
Regulator bypass pin must be bypassed to ground with a 4.7-
µF low ESR capacitor.
SE
12
O
A single ended voltage level has been detected on the DIFF B pin. SE pin high indicates that the terminator is in
high impedance mode.
TERMPWR
7
I
VIN 2.7-V to 5.25-V supply. TERMPWR should be bypassed to ground with a 4.7-µF low ESR capacitor.


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