PNI MicroMag - Manual (Page 15)

MicroMag User Manual – March 2010 Page 15 of 23
Figure 4-1: MicroMag2-on-Carrier Reference Block Diagram
4.3 Line Descriptions
4.3.1 SCLK (SPI Serial Clock)
The serial clock input is used to synchronize both the data in and out through the
MISO and MOSI lines. The serial clock signal is provided by the customer-supplied
master device and should be 1 MHz or less. One byte of data is exchanged over
eight clock cycles. Data is captured by the master device on the rising edge of
SCLK. Data is shifted out and presented to the MicroMag2 on the MOSI pin on the
falling edge of SCLK.