AX88772ALF datasheet(39/45 Pages) ASIX

39 / 45 page

ASIX ELECTRONICS CORPORATION

AX88772A/AX88172A

Low-pin-count

USB 2.0 to 10/100M Fast Ethernet Controller

Dynamic Characteristic for Analog I/O Pins (DP/DM):

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Driver Characteristic

High-Speed Mode

tHSR

High-speed differential rise time -

500

tHSF

High-speed differential fall time -

500

Full-Speed Mode

tFR

Rise time of DP/DM

CL=50pF; 10 to 90% of

|VOH - VOL|

tFF

Fall time of DP/DM

CL=50pF; 90 to 10% of

|VOH - VOL|

tFRMA

Differential rise/fall time

matching (

tFR / tFF)

Excluding the first transition

from idle mode

110

VCRS

Output signal crossover voltage Excluding the first transition

from idle mode

1.3

2.0

Driver Timing

High-Speed Mode

Driver waveform requirement

See eye pattern of template 1

Follow template 1 described in USB

rev 2.0 spec.

(http://www.usb.org/developers/docs

)

Full-Speed Mode

VI, FSE 0, OE to DP, DN

Propagation delay

For detailed description of VI,

FSE 0 and OE, please refer to

USB rev 1.1specification.

Receiver Timing

High-Speed Mode

Data source jitter and receiver

jitter tolerance

See eye pattern of template 4

Follow template 4 described in USB

rev 2.0 spec.

(http://www.usb.org/developers/docs

)

Full-Speed Mode

tPLH(rcv)

tPHL (rcv)

Receiver propagation delay

(DP; DM to RCV)

For detailed description of

RCV, please refer to USB rev

1.1specification.

(Note)

tPLH(single)

tPHL(single)

Receiver propagation delay

(DP; DM to VOP, VON)

(Note)

Note: Full-Speed Timing diagram

AX88772ALF 数据表(PDF) 39 Page - ASIX Electronics Corporation

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