SMART CARD
CONN
12X2 HDR
NAND
4GBIT
LPDDR2
8GBIT
SMART
CARD PHY
PMIC &
REGULATORS
HDMI DRVR
32 BIT
BUFFER (x2)
TWL1200
RS232 PHY
ETH PHY
AUDIO
CODEC
SPI FLASH
512MBIT
MAG STRIPE HDR
JTAG 10X2
HDR
DSS
SC, I2C
UART 0
UART 1
UART3,MMC1,
McASP0
I2C0
GPIO
McASP1
USB
DEBUG
RMII
SAM CARD
CONNX3
MICRO AB
GPIO
2X16
KEYS
TAMPER BOARD
CAMERA BOARD
7" LCD WITH CAPACITIVE TOUCH
BATTERY BOARD
8x2 HDR
USB TYPE- A
MICRO AB
COM8
CONN
J
T
A
G
U
S
B
1
U
S
B
0
C
A
M
1
Q
S
P
I
M
M
C
0
D
D
R
G
P
M
C
RS232 PHY
AM438X
www.ti.com
Functional Blocks Description
5
SPRUIF8 – June 2017
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Copyright © 2017, Texas Instruments Incorporated
AM438x ePOS EVM Hardware
3
Functional Blocks Description
The AM438x ePOS EVM has a camera board and/or wireless add-on boards.
Figure 3
shows the block
diagram of the ePOS EVM.
Figure 3. AM438x ePOS EVM Block Diagram
The following sections describe the major blocks of the ePOS EVM.
3.1
Processor
The AM438x processor is the central processor to this EVM. All the resources onboard surround the
AM438x processor to provide development capabilities for hardware and software. See the AM438x data
sheet and TRM for details about the processor.
System configuration signals (SYSBOOT0 to SYSBOOT18) on the EVM can be set using resistors and
switches to define some start-up parameters on the AM438x processor. See
Section 5
for more details.