Datasheet

Section 21 FSI Interface
Rev. 2.00 Sep. 28, 2009 Page 683 of 994
REJ09B0452-0200
21.2 Input/Output Pins
Table 21.1 shows the input/output pins of the FSI.
Table 21.1 Pin Configuration
Pin Name Symbol I/O Function
FSI slave select FSISS Output FSI slave select signal
FSI clock FSICK Output FSI clock signal
FSI master data input FSIDI Input FSI data input signal
FSI master data output FSIDO Output FSI address/direction/data output signal
For details on the input/output pins of the LPC interface, see section 20.2, Input/Output Pins.
Table 21.2 shows the initial state of the FSI input/output pins when the FSIE bit in the FSICR1
register is set to 1.
Table 21.2 Initial State of FSI Pins (when FSIE = 1)
Pin Name Symbol Pin State When FSIE is Set to 1
FSI slave select FSISS Outputs high level.
FSI clock FSICK Outputs high level or low level depending on CPHS and
CPOS.
FSI master data input FSIDI Inputs data.
FSI master data output FSIDO Outputs high level.