Datasheet

90E32AS ENHANCED POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
SPI Interface 31 April 2, 2013
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.
Figure-16 Slave Mode
SPI Interface logic
(As slave)
MISO
MOSI
SCK
CS
Host controller in
master mode
SCK
GPIO1
MOSI
MISO
SCLK
CS
SDI
SDO