Texas Instruments TMS570LC4357, Technical Reference Manual

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HTU1 FTU HTU2
Peripheral Interconnect Subsystem
DMA
PCR1
CPU Interconnect Subsystem
R5F
POM
DMM
DAP
PCR2 PCR3 CRC1 CRC2
EMAC
Flash EMIF SRAM
A B
A
B
ACP
SD
C
MMR
PS_SCR_S
PS_SCR_M
ACP-M
ACP-S SDC MMR Port
Overview
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266 SPNU563A – March 2018
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Interconnect
4.1 Overview
The interconnect is a bus matrix which interconnects the CPU cores, System DMA, other bus masters and
device specific slaves within the microcontroller. There are two interconnects in the microcontroller: the
CPU Interconnect Subsystem and the Peripheral Interconnect Subsystem. The interconnects direct the
access requests by the masters by providing decoding, arbitration, and routing of the requests to the
various slaves.
4.1.1 Block Diagram
Figure 4-1 is a block diagram of the Interconnects implemented in this family of microcontrollers.
Figure 4-1. Interconnect Block Diagram
4.2 Peripheral Interconnect Subsystem
There are masters and slaves connected to the Peripheral Interconnect Subsystem. The Peripheral
Interconnect Subsystem is not a full cross-bar. Not all masters can access to all slaves.
Table 4-1 lists the
implemented point-to-point connections between the masters and slaves.
Table 4-1. Bus Master / Slave Connectivity for Peripheral Interconnect Subsystem
Masters
Master ID to
PCRx Access Mode
Slaves on Peripheral Interconnect Subsystem
CRC1 CRC2 PCR1 PCR2 PCR3 PS_SCR_S
SDC MMR
Port
CPU
Read/Write
0 User/Privilege Yes Yes Yes Yes Yes No Yes
DMA Port B 2 User Yes Yes Yes Yes Yes No No
HTU1 3 Privilege No No No No No Yes No
HTU2 4 Privilege No No No No No Yes No
FTU 5 User No No No No No Yes No
DMM 7 User Yes Yes Yes Yes Yes Yes No
DAP 9 Privilege Yes Yes Yes Yes Yes Yes No
EMAC 10 User No No No Yes Yes Yes No