Figure3.6 external reset circuit, External reset circuit, Bidirectional scsi signals—a_scd – Avago Technologies LSI53C140 User Manual

Page 49: Input control signals—clock, reset/, ws_enable

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Electrical Characteristics

3-15

Ver. 2.1

Copyright © 1998–2001 by LSI Logic Corporation. All rights reserved.

Figure 3.6

External Reset Circuit

Table 3.12

Bidirectional SCSI Signals

A_SCD

±

, A_SIO

±

,

A_SMSG

±

, A_SBSY

±

, A_SATN

±

, A_SSEL

±

, A_SRST

±

,

B_SCD

±,

B_SIO

±,

B_SMSG ,B_SBSY

±

, B_SATN ,

B_SSEL

±

, B_SRST

Symbol Parameter

Min

Max

Unit

Test Conditions

V

IH

Input high voltage

2.0

V

DD

+0.3

V

V

IL

Input low voltage

V

SS

0.3

0.8

V

V

OL

Output low
voltage

V

SS

0.5

V

48 mA

I

OZ

3-state leakage

20

20

µ

A

V

PIN

= 0 V, 3.47 V

Table 3.13

Input Control Signals

CLOCK, RESET/, WS_ENABLE

Symbol

Parameter

Min

Max

Unit

Test Conditions

V

IH

Input high voltage

2.0

5.55

1

1. Operating Conditions.

V

V

IL

Input low voltage

V

SS

0.8

V

I

OZ

Input leakage

10

10

µ

A

V

PIN

= 0 V, 5.25 V

Input

3.3 V

0.1

µ

F

Reset
Pin 146

3.3 V

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