12

DS734F5

5.9 Switching Characteristics—Serial Control Port–SPI Slave Mode

5.9 Switching Characteristics—Serial Control Port–SPI Slave Mode

Figure 5-3. Serial Control Port–SPI Slave Mode Timing

DCLKP

—

—

ns

CS4852x-CQZ

CS4854x-CQZ

CS4856x-CQZ

CS4854x-DQZ

CS4856x-DQZ

6.7

6.7

6.7

6.7

6.7

reset.

Parameter

Symbol

Min

Typical

Max

Units

communication port may be limited by the firmware application. Flow control using the SCP_BSY# pin should be implemented to prevent overflow of

——

25

MHz

SCP_CS# falling to SCP_CLK rising

24

—

—

ns

SCP_CLK low time

20

—

—

ns

SCP_CLK high time

20

—

—

ns

Setup time SCP_MOSI input

5—

—

ns

Hold time SCP_MOSI input

5—

—

ns

SCP_CLK low to SCP_MISO output valid

——

11

ns

SCP_CLK falling to SCP_IRQ# rising

—

—

20

ns

SCP_CS# rising to SCP_IRQ# falling

0—

—

ns

SCP_CLK low to SCP_CS# rising

24

—

—

ns

SCP_CS# rising to SCP_MISO output high-Z

—20

—

ns

SCP_CLK rising to SCP_BSY# falling

—3*DCLKP+20

—

ns

Parameter

Symbol

Min

Max

Unit

SCP_BSY#

SCP_CS#

SCP_CLK

SCP_MOSI

SCP_MISO

SCP_IRQ#

0

12

670

56

7

A6

A5

A0

R/W

MSB

LSB

MSB

LSB