PXD20RM Datasheet, PDF (1212/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

IPS Bus/IPD Bus
AHB Bus
IP_Control
DMA and Interrupt Control
AHB_Control
SFAR ICR
address instruct.
register register
IP_Ctrl
command_build
& buffer control
ipcommand
(inst, addr, size)
TX
Buffer
RX
Buffer
AHB_Serve
AHB
Buffer
fetch
received
(addr, size, type) (Data)
ahbcommand
(inst, addr, size)
QSPI_IC_SFM
Command Processing
QSPI_IF
QSPI_IF_core
system clock domain
Clock Domain Crosser
QSPI_IF_sclk
SCLK clock domain
QuadSPI Bus Flash A QuadSPI Bus Flash B
Figure 35-1. QuadSPI block diagram
35-2
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor