User Manual

Red

pine Signals, Inc. Proprietary and confidential Page 23

RS9110

802.11bgn

WLAN

Module

Data Sheet

Version

1.48

Parameter Symbol Min. Typ. Max. Units

SPI_CLK T

pi 25 - 75 MHz

SPI_CS to output delay Tcs 3.5 - 7.5 ns

SPI CS to input setup time Tcst 5.5 - -

SPI_MOSI, input setup time Ts 1 - ns

SPI_MOSI, input hold time Th 1.5 - ns

SPI_MISO, clock to output

Tod 4 - 9.5 ns

ble

7: AC Characteristics – SPI Interface High-Speed Mode

SPI_CLK

SPI_CS

SPI_MOSI

SPI_MISO

Tod

Tcst

Tcs

SPI_CS

SPI_MISO

gure

10: Interface Timings – SPI Interface High-Speed Mode

4.3: Reset Timing

Following diagram shows the timing requirement for reset_n input in two

scenarios. If external power supply (instead of 2.8V coming out of the

module) is used for reference clock crystal oscillator, it has to be taken

care that oscillator output is stable before releasing reset. When using

2.8V coming out of module as power supply for reference clock crystal

oscillator, maximum oscillator stabilization time after feeding power has

to be 10ms.

A. Powerup

B. Giving hard reset without power reset