SI4711-B30-GM【PDF 6/40 页】IC TX FM RADIO 76-108MHZ 20UQFN

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Si4710/11-B30

Rev. 1.1

Figure 1. Reset Timing Parameters for Busmode Select

Table 4. Reset Timing Characteristics

1,2,3

= 2.7 to 5.5 V, V

= 1.5 to 3.6 V, T

= 20 to 85 癈)

Parameter

Symbol

Min

Typ

Max

Unit

RST

Pulse Width and GPO1, GPO2/INT

Setup to R

?/DIV>

SRST

100

祍

GPO1, GPO2/INT

Hold from R

?/DIV>

HRST

Important Notes:

1. When selecting 2-wire mode, the user must ensure that a 2-wire start condition (falling edge of SDIO while SCLK is

high) does not occur within 300 ns before the rising edge of RST

2. When selecting 2-wire mode, the user must ensure that SCLK is high during the rising edge of RST

, and stays high until

after the 1st start condition.

3. When selecting 3-wire or SPI modes, the user must ensure that a rising edge of SCLK does not occur within 300 ns

before the rising edge of RST

4. If GPO1 and GPO2 are actively driven by the user, then minimum t

SRST

is only 30 ns. If GPO1 or GPO2 is hi-Z, then

minimum t

SRST

is 100 祍, to provide time for on-chip 1 MW devices (active while RST

is low) to pull GPO1 high and

GPO2 low.

70%

30%

GPO1

70%

30%

PO2/

INT

70%

30%

SRST

RST

HRST

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