Si4704/05-C40

6

Rev. 1.0

Figure 1. Reset Timing Parameters for Busmode Select

Parameter

Symbol

Min

Typ

Max

Unit

RST Pulse Width and GPO1, GPO2/INT Setup to RST

100

—

—

µs

GPO1, GPO2/INT Hold from RST



30

—

—

ns

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 first 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.

GPO1 high and GPO2 low.

70%

30%

GPO1

70%

30%

GPO2/

INT

70%

30%

RST