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System
H3 Datasheet(Revision1.2) Copyright© 2015 Allwinner Technology Co.,Ltd.All Rights Reserved. Page 249
4.18. Secure Memory Touch Arbiter
4.18.1. Overview
Secure Memory Touch Arbiter provides a software interface to the protection bits in a secure system in a TrustZone
design. It provides system flexibility that enables to configure different areas of memory as secure or non-secure.
The SMTA includes the following features:
 It has protection bits to enable you to program some areas of memory as secure or non–secure.
4.18.2. Functionalities Description
4.18.2.1. Typical Applications
The SMTA provides a software interface to set up memory areas as secure or non-secure. It does this in two ways:
 Programmable protection bits that can be allocated to areas of memory as determined by an external decoder
 Programmable region size value for use by an AXI TrustZone Memory Adapter.
4.18.2.2. SMTA Configuration Table
The following table shows the configuration region of SMTA.
Table 4-6. SMTA Configuration Table
Register
Bit
SMTA0
SMTA1
SMTA2
Module Name
Module Name
Module Name
SMTA DECPORTx
(x=0,1,2)
[0]
/
NAND
VE SRAM
[1]
I2C0
DMA
R_CPUCFG
[2]
I2C1
Crypto Engine
System Control
[3]
SPI0
SRAM A1
CCU
[4]
SPI1
USB_OTG_Device
DE
[5]
GPIO
USB Host0
RTC
[6]
/
DRAMC
R_INTC
[7]
SD/eMMC0
PRCM
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