BeagleBoard XM C2, Справочное руководство

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REF: BB_SRM_xM
BeagleBoard-xM System
Reference Manual
Revision C2
Page 111 of 163
Table 26. P17 Auxiliary Expansion Signals
The following sections provide a brief description of the functions of the pins available.
For a more complete description, please refer to the datasheet or Technical Reference
Manuals. Not all of these signals can be used at the same time. Only one signal can be
used per pin at one time based on the setting of the pin mux registers in the processor.
Make sure that you set the correct mux mode when using these signals for their various
configurations.
7.26.1 MCBSP5 Signals
Access to McBSP5 is provided as an option on the connector.
Table 27 below shows the
pins that the McBSP5 interface appears on. In order to access these signals, the mux
mode for each pin must be set to 1.
Table 27. P17 McBSP5 Expansion Signals
7.26.2 MMC3 Signals
These signals can be used to provide an additional SD/MMC interface on an expansion
board. All of these signals are 1.8V, so if you plan to use the signals as an SD/MMC
interface, then a level shifter will be required. In order to access these signals, they must
be in Mux mode 2.
Table 28 is a description of these signals.
PIN SIGNAL PROC 0 1 2 3 4 5
1 VIO_1V8
2 VMMC2
3 MMC3_DAT2 AF13 ETK_D6 MCBSP5_DX MMC3_DAT2 HSUSB1_D6 GPIO_20
4 MMC3_DAT7 AH14 ETK_D7 MCSPI3_CS1 MMC3_DAT7 HSUSB1_D3 GPIO_21 MM1_TXEN_N
5 MMC3_DAT3 AE13 ETK_D3 MCSPI3_CLK MMC3_DAT3 HSUSB_D7 GPIO_17
6 GPIO_16 AH12 ETK_D2 MCSPI3_CS0 HSUSB1_D2 GPIO_16 MM1_TXDAT
7 GPIO_15 AG12 ETK_D1 MCBSPI3_SOMI HSUSB1_D1 GPIO_15 MM1_TXSE0
8 MMC3_DAT1 AH9 ETK_D5 MCBSP5_FSX MMC3_DAT1 HSUSB1_D5 GPIO_19
9 MMC3_DAT5 AG9 ETK_D9 SERCURE_IND MMC3_DAT5 HSUSB1_NXT GPIO_23 MM1_RX
10 MMC3_DAT4 AF11 ETK_D0 MCSPI3_SIMO MMC3_DAT4 HSUSB1_D0 GPIO_14 MM1_RXRCV
11 MMC3_DAT0 AE11 ETK_D4 MCBSP5_DR MMC3_DAT0 HSUSB1_D4 GPIO_18
12 MMC3_CMD AE10 ETK_CTL MMC3_CMD HSUSB1_CLK GPIO_13
13 MMC3_DAT6 AF9 ETK_D8 DRM_SECURE MMC3_DAT6 HSUSB1_DIT GPIO_22
14 MMC3_CLK AF10- ETK_CLK MCBSP5_CLKX MMC3_CLK HSUSB1_STP GPIO_12 MM1_RXDP
15 HDQ J25 HDQ SYS_ALTCLK GPIO_170
16 DMAREQ3 P8 DMAREQ3 GPT11_PWM GPIO_57
17 AUX_DC AUX_ADC
18 PWR_CNTRL PWR_CNTRL
19 GND
20 GND
PIN SIGNAL I/O DESCRIPTION PROC PINS
3
MCBSP5_DX O Transmitted Data AF13
8
MCBSP5_FSX O Frame Sync AH9
11
MCBSP5_DR I Received Data AE11
14
MCBSP5_CLKX O Serial Clock AF10-