AX6800X datasheet(46/57 Pages) ASIX

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AX6800x

2/4-Port USB KVM Switch SoC

4.5 AC Timing Characteristics

4.5.1 Clock Input Timing Specification

Symbol

Parameter

Min

Typ

Max

Units

Nominal Frequency

MHz

Frequency Stability

-50

+50

ppm

Crystal Load Capacitance

12.5

4.5.2 Timer 0/1/2 Interface Timing

Symbol

Description

Min

Typ

Max

Units

Tck_hi

TM_CK[2:0] high pulse width

Tsys_clk

Tck_low

TM_CK[2:0] low pulse width

Tsys_clk

Tck_fal

TM_CK[2:0] falling-edge internal detection time

1 ~ 2

Tsys_clk

Figure 4-3: TM_CK[2:0] Timing Diagram and Table

Symbol

Description

Min

Typ

Max

Units

Tgt_hi

TM_GT[2:0] high pulse width

Tsys_clk

Tgt_low

TM_GT[2:0] low pulse width

Tsys_clk

Tgt_fal

TM_GT[2:0] falling-edge internal detection time

1 ~ 2

Tsys_clk

Tgt_dly

TM_GT[2:0] internally retimed delay

0.5

Tsys_clk

Figure 4-4: TM_GT[2:0] Timing Diagram and Table

Tck_fal

Tck_low

Tck_hi

Tck_low

Tck_hi

TM_CK[2:0]

internal sys_clk

TM_CK[2:0] falling-edge detected internally

T gt_dl y

T gt_fal

T gt_low

T gt_hi

T gt_low

T gt_hi

T M_GT [2:0]

internal sys_clk

T M_GT [2:0] falling-edge detected internally

internally retimed T M_GT [2:0]

AX6800X Scheda tecnica(PDF) 46 Page - ASIX Electronics Corporation

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