Dell 1909Wf, Service Manual

Page: 23 / 71

Service Manual
22
5 SI I/O To transfer commands, addresses, or data serially
into the device
input are latched on the rising edge of the serial
clock.
6 SCK I/O To provide the timing of serial interface.
Commands, addresses, or input data are latched on
the rising edge of the clock input, while output
data is shifted out on the
Falling edge of the clock input.
7 HOLD I/O To temporarily stop serial communication with SPI
flash memory without resetting the device.
8 VDD P To provide power supply.