SI3015 Просмотр технического описания (PDF) - Unspecified

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SI3015

3.3 V FCC/JATE DIRECT ACCESS ARRANGEMENT

Unspecified 

Si3035

Table 10. Switching Characteristics—Serial Interface (DCE = 1, FSD = 1)

(VA = Charge Pump, VD = 3.0 to 5.25 V, TA = 0 to 70°C for K-Grade, CL = 20 pF)

Parameter1,2

Symbol

Min

Typ

Max

Cycle Time, SCLK

tc

354

1/256 Fs

—

SCLK Duty Cycle

tdty

—

50

—

Delay Time, SCLK ↑ to FSYNC ↑

td1

—

—

10

Delay Time, SCLK ↑ to FSYNC ↓

td2

—

—

10

Delay Time, SCLK ↑ to SDO valid

td3

0.25tc – 20

—

0.25tc + 20

Delay Time, SCLK ↑ to SDO Hi-Z

td4

—

—

20

Delay Time, SCLK ↑ to RGDT ↓

td5

—

—

20

Setup Time, SDO Before SCLK ↓

tsu

25

—

—

Hold Time, SDO After SCLK ↓

th

20

—

—

Setup Time, SDI Before SCLK

tsu2

25

—

—

Hold Time, SDI After SCLK

th2

20

—

—

Notes:

1. All timing is referenced to the 50% level of the waveform. Input test levels are VIH = VD – 0.4 V, VIL = 0.4 V.

2. Refer to the section "Multiple Device Support" on page 25 for functional details.

Unit

ns

%

ns

ns

ns

ns

ns

ns

ns

ns

ns

SCLK

td1

FSYNC

(mode 1)

SDO

(m aster)

SDO

(slave 1)

FSD

SDI

tc

td2

td3

tsu

th

D15

D14

D13

tsu2

D15

th2

D14

D0

D1

D0

Figure 5. Serial Interface Timing Diagram (DCE = 1, FSD = 1)

10

Rev. 1.2

td4

td3

D15

td5

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