AS8222 datasheet(19/43 Pages) AMSCO

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AS8222

Datasheet - Electrical Character i s t ics

www.ams.com/eng/FlexRay/AS8222

Revision 1.0

18 - 42

6.12 Bus Guardian Interface

6.13 Read Out Interface

Table 14. Bus Guardian Interface

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VBGEIH

uVDIG-IN-

HIGH

Threshold for detecting BGE as on logical high

Threshold for detecting a digital input as on

logical high

0.48 * VIO 0.7 * VIO

0.7 ×

uVDIG

VBGEIL

uVDIG-IN-

LOW

Threshold for detecting BGE as on logical low

Threshold for detecting a digital input as on

logical low

0.3 * VIO

0.3 ×

uVDIG

0.48 * VIO

IBGEIH

BGE high level input current

100

µA

IBGEIL

BGE low level input current

-5

µA

VRxENOH

uVDIG-OUT-

HIGH

RxEN high level output voltage

Output voltage on a digital output, when in

logical high state

IRxEN=-4mA, VIO=5V

0.8 * VIO

0.8 ×

uVDIG

0.9 * VIO 1.0 * VIO

1.0 ×

uVDIG

VRxENOL

uVDIG-OUT-

LOW

RxEN low level output voltage

Output voltage on a digital output, when in

logical low state

IRxEN=4mA, VIO=5V

0.1 * VIO 0.2 * VIO

0.2 ×

uVDIG

Table 15. Read Out Interface

Symbol

Parameter

Conditions

Min

Typ

Max

Units

tRO_PROP_ERRN

Propagation delay falling edge EN to ERRN

4.5

µs

tRO_EN_TIMEOUT

Error read out time out

100

µs

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