PPC-E7+ User Manual.doc
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Rev 1.3 © 2015 EMAC, Inc.
Pin
Signal
Pin
Signal
1
3.3V
2
3.3V
3
GPIO1
4
GPIO4
5
GPIO2
6
GPIO5
7
GPIO3
8
GPIO6
9
INT0
10
GPIO7
11
INT1
12
GND
13
OSC0
14
GND
15
OSC1
16
GND
17
ADC4
18
GND
19
ADC5
20
GND
21
ADC6
22
GND
23
ADC7
24
GND
25
SPI_MISO
26
GND
27
SPI_MOSI
28
GND
29
31
33
35
37
39
41
43
SPI_CLK
SPI_CS3
SPI_CS1
I2C_DAT
I2C_CLK
*SOM_RSTOUT
5V_VCC
GND
30
32
34
36
38
40
42
44
GND
GND
GND
GND
GND
GND
5V_VCC
GND
2.12
Real-Time Clock
The PPC-
E7+ is equipped with an external battery for backing up the module’s Real-Time Clock (RTC). Drivers to
access the RTC are included in the operating systems. Jumper JB4 should be placed in the ON position in order
to retain system time when powered down.
2.13
Serial Flash
PPC-E7+ is equipped with 4MB of SPI based serial NOR flash. The PPC-E7+ can high-level boot from either the
Serial Data NOR Flash or the NAND Flash (selected through the low-level bootloader). It is recommended to
high-level boot from the Serial Data Flash, as this Flash is more reliable than the NAND Flash. The NAND flash is
ideal for the Operating System’s File System which can normally handle marked bad blocks.
The Serial Data Flash is connected to SPI0 and uses SPI0_NPCS0 to enable it. The Serial Data Flash also has a
Write Protect Provision. To Write Protect the Serial Data Flash set JB3 to position B. See the software drivers for
details on accessing this.
2.14
PCD-E12 Expansion
If additional I/O is required the PCD-E12 daughter card can be utilized. This card connects to the PPC-E7+ via
SPI bus on connector ABJ1. The PCD-E12 features CAN, A/D, D/A, Serial Ports, and GPIO. For more info on the
PCD-E12 go to:
www.emacinc.com/sbc_pc_compatible/pcm_53e52.htm
2.15
Status LEDs and Reset
The PPC-E7+ provides two status LEDs, LD1 (Green) and LD2 (Red). These can be controlled independently via
software (GPIO13 & GPIO12 respectively). LD1 and LD2 are located just to the left of the SD/MMC socket.
Also provided is a Reset Button (PB1). Pressing this button will cause the system to reset.
