Cirrus-logic CS5374 Manuel d'utilisateur télécharger pdf (Page 12)

CS5374

CS5374

12

SPI™ INTERFACE TIMING (EXTERNAL MASTER)

Parameter Symbol Min Typ Max Unit

SDI Write Timing

CS

Enable to Valid Latch Clock t

1

60 - - ns

Data Set-up Time Prior to SCK Rising t

2

60 - - ns

Data Hold Time After SCK Rising t

3

60 - - ns

SCK High Time t

4

120 - - ns

SCK Low Time t

5

120 - - ns

SCK Falling Prior to CS

Disable t

6

60 - - ns

SDO Read Timing

SCK Falling to New Data Bit t

7

- - 90 ns

SCK High Time t

8

120 - - ns

SCK Low Time t

9

120 - - ns

SCK Falling Hold Time Prior to CS

Disable t

10

60 - - ns

MSB MSB - 1 LSB

t

6

t

5

t

4

t

3

t

2

t

1

CS

SDI

SCK

Figure 8. SDI Write Timing in SPI Slave Mode

MSB MSB - 1 LSB

t

9

t

8

t

7

CS

SDO

SCK

t

10

Figure 9. SDO Read Timing in SPI Slave Mode

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 43 44

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