90E32 Datasheet, PDF (26/71 Pages) Integrated Device Technology – Poly-Phase High-Performance Wide-Span Energy Metering IC

90E32
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
4
SPI INTERFACE
4.1 INTERFACE DESCRIPTION
Four pins are associated with the interface as below:
• SDI – Data pin, input.
• SDO – Data pin, output.
• SCLK – Clock input pin.
• CS – Chip select pin Input.
SPI Interface logic
(As slave)
SDI
SDO
SCLK
CS
MOSI
MISO
SCK
CS
Host controller in
master mode
MOSI
MISO
SCK
GPIO1
Figure-11 Slave Mode
SPI Interface
26
December 9, 2011