Part II: PCM-959/phyCORE-OMAP44xx Carrier Board
phyCORE-OMAP44xx
148
©
PHYTEC Messtechnik GmbH
2012
L-760e_1
2.1.3.21.5 SPI1 Signal Mapping
Expansion connector X5 provides connectivity to the SPI1 interface of the phyCORE-OMAP44xx. As can be seen
in the following table chip select three (CS3) addresses SPI devices attached to the expansion connector.
All signals have been translated from 1.8 V to 3.3 V by voltage-level translators on the carrier board.
X_CSI21_DY2
X5C23
I
1.8 V/CSI
CSI2-A (CSI21) differential data
lane negative input 2
X_KPD_COL4_CSI21_DX3
X5C24
O/I
1.8 V/CSI
Keyboard column 4 (open drain) /
CSI2-A (CSI21) differential data
lane positive input 3
X_KPD_ROW4_CSI21_DY3 X5C25
I
1.8 V/CSI
Keyboard row 4 / CSI2-A (CSI21)
differential data lane negative
input 3
X_KPD_COL5_CSI21_DX4
X5C26
O/I
1.8 V/CSI
Keyboard column 5 (open drain) /
CSI2-A (CSI21) differential data
lane positive input 4
X_KPD_ROW5_CSI21_DY4 X5C27
I
1.8 V/CSI
Keyboard row 5 / CSI2-A (CSI21)
differential data lane negative
input 4
Note:
The function of camera control signals CAM-1_CTRL1 and CAM-1_CTRL2 depends on the camera board used.
Connector X2 allows to connect them either to GND, or VCC-CAM-1, or any other signal needed. Please refer to
the hardware manual delivered with your camera board for precise information on theses signals and their
function.
Note:
The resistor array JN1 on the phyCORE-OMAP44xx allows to choose which signals are brought out at these
pins. In order to use camera lanes 3 and 4 of the primary camera interface at expansion connector X5 JN1 must
be set to position 2. Please refer to
to see where JN1 is located.
Signal
Pin #
I/O
SL
Description
SPI1_CLK_3V3
X5C29
O
3.3 V
SPI1 clock
SPI1_MISO_3V3
X5C30
I/O
3.3 V
SPI1 MISO
SPI1_MOSI_3V3
X5C31
I/O
3.3 V
SPI1 MOSI
SPI1_CS3_3V3
X5C32
O
3.3 V
SPI1 Chip Select 3
/SPI1_RDY_3V3
X5C33
I/O
3.3 V
SPI1 Ready
Table 74:
SPI1 Signal Mapping
Signal
Pin #
I/O
SL
Description
Table 73:
CSI21 Camera Signal Mapping
