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Scsi signals—sd[15:0]/, sdp[1:0]/, sreq/, sack – Avago Technologies LSI53C825AE User Manual

Page 231

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DC Characteristics

6-3

Table 6.3

SCSI Signals—SD[15:0]/, SDP[1:0]/, SREQ/, SACK/

Symbol

Parameter

Min

Max

Unit

Test Conditions

V

IH

Input high voltage

2.0

V

DD

+0.5

V

V

IL

Input low voltage

V

SS

0.5

0.8

V

V

OH

1

1. TolerANT active negation enabled.

Output high voltage

2.5

3.5

V

2.5 mA

V

OL

Output low voltage

V

SS

0.5

V

48 mA

I

OZ

3-state leakage

10

10

µ

A

Table 6.4

SCSI Signals—SMSG, SI_O/, SC_D/, SATN/, SBSY/, SSEL/, SRST/

Symbol

Parameter

Min

Max

Unit

Test Conditions

V

IH

Input high voltage

2.0

V

DD

+0.5

V

V

IL

Input low voltage

V

SS

0.5

0.8

V

V

OL

Output low voltage

V

SS

0.5

V

48 mA

I

OZ

3-state leakage
(SRST/ only)

10

500

10

50

µ

A

Table 6.5

Input Signals

1

—CLK, SCLK, GNT/, IDSEL, RST/, TESTIN, DIFFSENS,

BIG_LIT/

1. CLK, SCLK, and BIG_LIT/ have 100

µ

A pull-ups, and GNT/ and IDSEL have 25

µ

A pull-ups, that

are enabled when TESTIN is low. TESTIN has a 100

µ

A pull-up that is always enabled.

Symbol

Parameter

Min

Max

Unit

Test Conditions

V

IH

Input high voltage

2.0

V

DD

+0.5

V

V

IL

Input low voltage

V

SS

0.5

0.8

V

I

IN

Input leakage

10

10

µ

A