phyCORE-OMAP44xx
Part II: PCM-959/phyCORE-OMAP44xx Carrier Board
L-760e_1 © PHYTEC Messtechnik GmbH 2012
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2.1.3.15 Extension Connectors (X18, X19)
Figure 40:
Extension Connectors X18, X19
Extension connectors X18 and X19 provide an easy way to add other functions and features to the
phyCORE-OMAP44xx Carrier Board. Standard interfaces such as USB, SPI and I
2
C as well as different supply
voltages and one GPIO are available at the pin header Rows.
As can be seen in
the location of the connectors allows to extend the functionality without expanding
the physical dimensions. Mounting wholes can be used to screw the additional PCBs to the phyCORE-OMAP44xx
Carrier Board. When referencing pin numbers note that pin 1 is located at the angled corner. Pins towards the
labeling "X18", or "X19"are odd numbered.
The extension connectors share the SPI interface of the phyCORE-OMAP44xx with the display data connector
X12, but they used different CS- signals.
Signal
Extension Connector
Description
SPI1_CS0_3V3
X19
Chip Select 0 of the SPI 1 interface
SPI1_CS1_3V3
X18
Chip Select 1 of the SPI 1 interface
X_UART4_RX_GPIO_155
X19
The SLOT0_IRQ of PEB
X_UART4_TX_GPIO_155
X18
The SLOT1_IRQ of PEB
Table 64:
Signal Assignment to Extension Connector
