MPC5668x Data Sheet - Freescale Semiconductor

PXN20 block diagrams
Figure 3 shows a top level block diagram for the PXN21 device.
6
PXN21 Block Diagram
Debug
JTAG
Nexus3 (Z6)
Nexus2+ (Z0)
e200z0 Core
VLE
2 MB
Flash
(ECC)
ECSM
Masters
e200z650 Core
VLE
MMU (32 TLB)
FPU/SPE
32 KB Cache
4/8 Way
32 kHz
XTAL
Crossbar Switch (XBAR)
8 x UART/LIN
64 x ADC
32 x eMIOS
PBRIDGE B
CTU
ADC – Analog-to-digital converter
BAM – Boot assist module
CAN – Controller area network controller
CTU – Cross triggering unit
ECC – Error correction code
ECSM – Error correction status module
eDMA – Enhanced direct memory access controller
eMIOS – Timed input/output
FMPLL – Frequency-modulated phase-locked loop
I 2 C – Inter-integrated circuit controller
INTC – Interrupt controller
JTAG – Joint Test Action Group interface
128 kHz
IRC
Semaphores
32-ch DMA
Mux
4–40 MHz
XTAL
FMPLL
Memory Protection Unit (MPU)
2 x I 2 C
2 x SPI
5 x CAN
Figure 3. PXN21 block diagram
PBRIDGE A
4 x UART/LIN
2 x SPI
2 x I 2 C
PXN20 Microcontroller Data Sheet, Rev. 1
16 MHz
IRC
VREG
Controller
RTC/API
128 KB
SRAM
(ECC)
SWT
STM
INTC
PIT
BAM
SIU
Standby RAM
ECSM
MPU – Memory protection unit
NDI – Nexus debug interface
PBRIDGE – Peripheral I/O bridge
PIT – Periodic interrupt timer
RTC – Real time clock
SIU – System integration unit
SPI – Serial peripheral interface controller
STM – System timer module
SWT – Software watchdog timer
UART/LIN – Universal asynchronous receiver/transmitter/
local interconnect network
VREG – Voltage regulator
Freescale Semiconductor