SI4720-B20 Просмотр технического описания (PDF) - Silicon Laboratories

Номер в каталоге

Компоненты Описание

производитель

SI4720-B20

BROADCAST FM RADIO TRANSCEIVER FOR PORTABLE APPLICATIONS

Silicon Laboratories 

Si4720/21-B20

Table 7. SPI Control Interface Characteristics

(VDD = 2.7 to 5.5 V, VIO = 1.5 to 3.6 V, TA = –20 to 85 °C)

Parameter

Symbol

Test Condition

Min

Typ

Max Unit

SCLK Frequency

fCLK

0

—

2.5

MHz

SCLK High Time

tHIGH

25

—

—

ns

SCLK Low Time

tLOW

25

—

—

ns

SDIO Input, SEN to SCLKSetup

tS

15

—

—

ns

SDIO Input to SCLKHold

SEN Input to SCLKHold

SCLKto SDIO Output Valid

SCLKto SDIO Output High Z

tHSDIO

tHSEN

tCDV

tCDZ

Read

Read

10

—

—

ns

5

—

—

ns

2

—

25

ns

2

—

25

ns

SCLK, SEN, SDIO, Rise/Fall time

tR, tF

—

—

10

ns

Note: When selecting SPI mode, the user must ensure that a rising edge of SCLK does not occur within 300 ns before the

rising edge of RST.

SCLK 70%

30%

SEN 70%

30%

tS

tS

tR

tF

tHIGH tLOW

tHSDIO

tHSEN

SDIO 70%

30%

C7

C6–C1

C0

D7

D6–D1

D0

Control Byte In

8 Data Bytes In

Figure 6. SPI Control Interface Write Timing Parameters

SCLK 70%

30%

SEN 70%

30%

SDIO 70%

30%

tS

tS

C7

C6–C1

tCDV

tHSDIO

C0

D7

tHSEN

D6–D1

tCDZ

D0

Control Byte In

Bus

Turnaround

16 Data Bytes Out

(SDIO or GPO1)

Figure 7. SPI Control Interface Read Timing Parameters

Rev. 1.0

11

Share Link: