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11 switching characteristics—serial control port—i, C slave mode – Cirrus Logic CS48LV13 User Manual

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DS1057F1

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4.11 Switching Characteristics—Serial Control Port—I2C Slave Mode

Figure 4-5. Serial Control Port—SPI Slave Mode Timing

4.11 Switching Characteristics—Serial Control Port—I

2

C Slave Mode

Parameter

Symbol

Min

Typical

Max

Units

SCL frequency

1

1.The specification f

iicck

indicates the maximum speed of the hardware. The system designer should be aware that the actual maximum speed of the

communication port can be limited by the firmware application. Flow control using the BUSY pin should be implemented to prevent overflow of the
input data buffer.

f

iicck

400

kHz

SCL low time

t

iicckl

1.25

µs

SCL high time

t

iicckh

1.25

µs

SCL and SDA rise time

t

r

75

ns

SCL and SDA fall time

t

f

75

ns

SCL rising to SDA rising or falling for START or STOP condition

t

iicckcmd

1.25

µs

START condition to SCL falling

t

iicstscl

1.25

µs

SCL falling to STOP condition

t

iicstp

2.5

µs

Bus free time between STOP and START conditions

t

iicbft

3

µs

Setup time SDA input valid to SCL rising

t

iicsu

100

ns

SDA input hold time after SCL falling

t

iich

0

ns

SDA output hold time from SCL falling

t

hddo

18

ns

SCL falling to INT rising

t

iicirqh

3

*

DCLKP + 40

ns

NAK condition to INT low

t

iicirql

3

*

DCLKP + 20

ns

SCL rising to BUSY low

t

iicbsyl

3

*

DCLKP + 20

ns

BUSY/

I2C_SELECT

CS

CLK/SCL

MOSI

MISO/SDA

INT

0

1

2

6

7

0

5

6

7

t

spicss

t

spickl

t

spickh

t

spidsu

t

spidh

t

spidov

A6

A5

A0

R/W

MSB

LSB

MSB

LSB

t

spicsh

t

spibsyl

t

spiirql

t

spiirqh

f

spisck

t

spicsdz

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