SI4702-C19 Просмотр технического описания (PDF) - Silicon Laboratories

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SI4702-C19

BROADCAST FM RADIO TUNER FOR PORTABLE APPLICATIONS

Silicon Laboratories 

Si4702/03-C19

Table 5. Reset Timing Characteristics (Busmode Select Method 2)1,2,3

Parameter

Symbol Test Condition

Min

Typ

Max

Unit

GPIO1 and GPIO3 Setup to RST

tSRST2

GPIO3 = 1

30

—

—

ns

GPIO1 and GPIO3 Hold from RST

tHRST2

30

—

—

ns

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 3-wire Mode, the user must ensure that a rising edge of SCLK does not occur within 300 ns before the

rising edge of RST.

3. 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.

tSRST2 tHRST2

RST 70%

30%

GPIO3 70%

30%

GPIO1 70%

30%

Figure 2. Reset Timing Parameters for Busmode Select Method 2 (GPIO3 = 1)

Rev. 1.1

7

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