DM3725CBC datasheet(240/280 Pages) TI

240 / 280 page

SWPS038-086

HDQ

First sampling time

Second sampling time

HW1

HW0

SWPS038-122

SWPS038-087

HDQ

HW1

HW0

CYCH

SWPS038-088

HDQ

DW1

DW0

CYCD

SWPS038-089

HDQ

Break

0_(LSB)

7_(MSB)

RSPS

Command_byte_written

Data_byte_received

0_(LSB)

DM3730, DM3725

SPRS685D

– AUGUST 2010 – REVISED JULY 2011

www.ti.com

Table 6-102. HDQ Write Switching Characteristics

PARAMETER

DESCRIPTION

MIN

TYP

MAX

UNIT

Break timing

190

μs

tBR

Break recovery time

μs

tCYCD

Write bit windows timing

190

μs

tDW1

Write one data valid after HDQ low

0.5

μs

tDW0

Write zero data hold after HDQ low

145

μs

Figure 6-55. HDQ Break and Break Recovery Timing

— HDQ Interface Writing to Slave

Figure 6-56. HDQ Break Detection

— HDQ Interface Reading Slave

Figure 6-57. HDQ Interface Bit Read Timing (Data)

Figure 6-58. HDQ Interface Bit Write Timing (Command/Address or Data)

Figure 6-59. HDQ

—Communication

6.6.6.2

HDQ/1-Wire

—1-Wire Mode

Table 6-103 and Table 6-104 assume testing over the recommended operating conditions and electrical

characteristic conditions below (see Figure 6-60 through Figure 6-63).

240

Timing Requirements and Switching Characteristics

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