Cirrus-logic CS48LV13 Manuel d'utilisateur télécharger pdf (Page 18)

DS1057F1 18

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

C Slave Mode

Parameter Symbol Min Typical Max Units

SCL frequency

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.

iicck

—— 400kHz

SCL low time t

iicckl

1.25 — — µs

SCL high time t

iicckh

1.25 — — µs

SCL and SDA rise time t

— — 75 ns

SCL and SDA fall time t

— — 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

DCLKP + 20 — ns

SCL rising to BUSY

low t

iicbsyl

—3

DCLKP + 20 — ns

BUSY/

I2C_ SELECT

CLK/SCL

MOSI

MISO/SDA

INT

12670

spicss

spickl

spickh

spidsu

spidh

spid ov

A6 A5 A0 R/W MSB LSB

MSB LSB

spicsh

spib syl

spiirql

spiirqh

spisck

spicsdz

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 24 25 26

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Cirrus-logic CS48LV13 Manuel d'utilisateur Page 18

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