UCC5696

SLVS406B – JUNE 2002 – REVISED JUNE 2003

27LINE LVD ONLY SCSI TERMINATOR FOR SPI5

1

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FEATURES

160 (SPI-3), Ultra320 (SPI-4), and Ultra640

(SPI-5) Standards

Differential Bias Current

(QFP)

APPLICATION DIAGRAM

DESCRIPTION

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.

differential impedance and the differential bias

current.

The

differential

impedance

is

programmed in 5-

Ω increments from 55 Ω to

130

Ω 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.

UDG–01093

REG

TERMPWR

ICAD0

Termpower

7

49

15

10

DIFSENS

CONTROL LINES (9)

1

2

30

29

L1+

L1–

L9+

L9–

DATA (9)

LOW BYTE 0–7

+ PARITY LINES

32

31

61

62

L10+

L10–

L18+

L18–

63

64

79

80

L19+

L19–

L27+

L27–

52

DISCNCT

ICBD

50

4.7

µF

UCC5696

4.7

µ F

DATA (9)

HIGH BYTE 8–15

+ PARITY LINES

TERMPWR

REG

15

10

7

DIFSENS

1

2

30

29

L1+

L1–

L9+

L9–

32

31

61

62

L10+

L10–

L18+

L18–

Termpower

63

64

79

80

L19+

L19–

L27+

L27–

52

UCC5696

4.7

µ F

4.7

µF

ICBC

51

16

DIFFB

16

DIFFB

ICAD6

43

49

50

51

43

ICAD0

ICBD

ICBC

ICAD6

I2 CBUS

I2 CBUS

DISCNCT

54

54

8

PVDD

8

PVDD

GND

GND

I2 C Address

20 k

Ω

20 k

Ω

0.1

µF

0.1

µF

I2 C Address

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright

 2002, Texas Instruments Incorporated

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.