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UCC5696 PDF预览

UCC5696

更新时间: 2024-09-20 12:19:39
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德州仪器 - TI /
页数 文件大小 规格书
12页 178K
描述
27 LINE LVD ONLY SCSI TERMINATOR FOR SPI-5

UCC5696 数据手册

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SLVS406B – JUNE 2002 – REVISED JUNE 2003  
FEATURES  
DESCRIPTION  
D
Meets Ultra2 (SPI-2 LVD SCSI), Ultra3, Ultra  
160 (SPI-3), Ultra320 (SPI-4), and Ultra640  
(SPI-5) Standards  
The UCC5696 is a 27-line LVD only SCSI  
programmable terminator. The nominal settings  
on power up are compliant to SPI-2 through SPI-4.  
The programmable settings are used for SPI-5.  
The UCC5696 uses the I C to program the  
differential impedance and the differential bias  
D
D
D
D
2.7-V to 5.25-V Termpwr Operation  
Differential Fail-Safe Bias  
2
2
I C Bus Adjustable Impedance and  
current.  
The  
differential  
impedance  
is  
Differential Bias Current  
programmed in 5-increments from 55 to  
130 using 4 bits (16 steps). The differential bias  
current is programmed in 50 µA from 0.7 mA to  
1.45 mA using 4 bits (16 steps). The UCC5696  
has the SPI-3 mode change delay, the typical  
value is 200 ms.  
80-Pin Low Profile Quad Flat Pack Package  
(QFP)  
APPLICATION DIAGRAM  
UCC5696  
PVDD  
UCC5696  
L1+  
L1–  
1
2
1
2
L1+  
L1–  
8
PVDD  
8
7
Termpower  
Termpower  
7
TERMPWR  
TERMPWR  
CONTROL LINES (9)  
4.7µF  
4.7 F  
µ
L9+ 30  
L9– 29  
30 L9+  
29 L9–  
DIFSENS 15  
15 DIFSENS  
50 ICBD  
51 ICBC  
ICBD 50  
ICBC 51  
2
2
CBUS  
I
CBUS  
I
20 k  
20 k  
DIFFB 16  
16 DIFFB  
µ
F
µ
F
0.1  
0.1  
49 ICAD0  
43 ICAD6  
ICAD0 49  
ICAD6 43  
L10+ 32  
L10– 31  
32 L10+  
31 L10–  
2
2
I
C Address  
I
C Address  
DATA (9)  
LOW BYTE 0–7  
+ PARITY LINES  
L18+ 61  
L18– 62  
61 L18+  
62 L18–  
DISCNCT  
52  
DISCNCT 52  
L19+ 63  
L19– 64  
63 L19+  
64 L19–  
DATA (9)  
HIGH BYTE 8–15  
+ PARITY LINES  
10  
10  
REG  
REG  
µ
4.7  
F
L27+ 79  
79 L27+  
80 L27–  
4.7  
µ
F
L27– 80  
GND  
GND  
54  
54  
UDG–01093  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
ꢑꢢ  
Copyright 2002, Texas Instruments Incorporated  
ꢞ ꢢ ꢟ ꢞꢗ ꢘꢬ ꢚꢙ ꢝ ꢥꢥ ꢣꢝ ꢛ ꢝ ꢜ ꢢ ꢞ ꢢ ꢛ ꢟ ꢧ  
1
www.ti.com  

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