CS4953xx Data Sheet

32-bit Audio Decoder DSP Family

DS705PP6

Copyright 2009 Cirrus Logic

15

5.11 Switching Characteristics — Serial Control Port - SPI Master Mode

.

Figure 4. Serial Control Port - SPI Master Mode Timing

Parameter

Symbol

Min

Typical

Max

Units

the actual maximum speed of the communication port may be limited by the firmware application.

2. See Section 5.8.

MHz

3. SCP_CLK PERIOD refers to the period of SCP_CLK as being used in a given application. It does not refer to a

tested parameter

-

11*DCLKP +

(SCP_CLK PERIOD)/2

-ns

SCP_CLK low time

18

-

ns

SCP_CLK high time

18

-

ns

Setup time SCP_MISO input

11

-

ns

Hold time SCP_MISO input

5-

ns

SCP_CLK low to SCP_MOSI output valid

-11

ns

SCP_CLK low to SCP_CS falling

7-

ns

SCP_CLK low to SCP_CS rising

-

11*DCLKP +

(SCP_CLK PERIOD)/2

-ns

Bus free time between active SCP_CS

3*DCLKP

-

ns

SCP_CLK falling to SCP_MOSI output high-Z

-20

ns

EE_CS

SCP_CLK

SCP_MISO

SCP_MOSI

0

12

67

0

56

7

A6

A5

A0

R/W

MSB

LSB

MSB

LSB