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7.1.3 GPIO {A-L}
The 96Boards CE specification calls for 12 GPIO lines to be implemented on the Low Speed Expansion Connector. Some of these
GPIOs may support alternate functions for DSI/CSI control.
The SD 600eval board implements this requirement. 11 GPIOs are routed to the APQ8064 SoC and one GPIO is connected to the
on-board PMIC.
Sr.
No.
LS Exp Conn
Pin No.
GPIO
SOC GPIO
Alternate Functionality
1
23
GPIO A
GPIO_35
APQ_INT
2
24
GPIO B
GPIO_33
TS_RST_N
3
25
GPIO C
GPIO_55
TST_INT_N
4
26
GPIO D
GPIO_56
MAG_INT
5
27
GPIO E
GPIO_29
GYRO_ACC_INT
6
28
GPIO F
GPIO_26
DSI_BLCTRL
7
29
GPIO G
GPIO_0
DSI_VSYNC
8
30
GPIO H
MPP_1(PMM8920)
PMIC GPIO Configured as DSI_RST
9
31
GPIO I
GPIO_28
CSI0_RST
10
32
GPIO J
GPIO_30
CSI0_PWDN
11
33
GPIO K
GPIO_34
CSI1_RST
12
34
GPIO L
GPIO_31
CSI1_PWDN
7.1.4 SPI0
The 96Boards CE specification calls for one SPI bus master to be provided on the Low Speed Expansion Connector.
The SD 600eval board implements a full SPI master with 4 wires, CLK, CS, MOSI and MISO all connect directly to the APQ8064
SoC. These signals are driven at 1.8V.
7.1.5 PCM/I2S
The 96Boards CE specification calls for one PCM/I2S bus to be provided on the Low Speed Expansion Connector. The CLK, FS and
DO signals are required while the DI is optional.
The SD 600eval board implements a PCM with 4 wires, CLK, FS, DO and DI signal implemented on the SD 600eval board. The
PCM signals are connected directly to the APQ8064 SoC. These signals are driven at 1.8V.
7.1.6 Power and Reset
The 96Boards CE specification calls for signals on the Low Speed Expansion Connector that can power on/off and reset the
board.
The SD 600eval board routes the PWR_BTN_N signal to the KYPD_PWR_N pin of the PMIC PM8920. This signal is driven by on
board push button switch SW2 as well.
The SD 600eval board routes the RST_BTN_N signal to the RESIN_N pin of the PMIC PM8920. This signal is driven by on board
push button switch SW3 as well.
Note:
Do not drive these signals with any voltage on mezzanine board implementation; the only allowed operation is to force
these signals to GND.
7.1.7 Power Supplies
The 96Boards CE specification calls for three power rails to be present on the Low Speed Expansion Connector:
•
+1.8V: Max of 100mA
•
+5V: Able to provide a minimum of 5W of power (1A).
•
SYS_DCIN: 8-18V input with enough current to support all the board functions or the output DCIN from on-board DC
Connector able to provide a minimum of 7W of power.
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