Texas Instruments OMAP5912 Reference Manual page 485

Configuration
Table 36. Module Configuration Control 0 Register (MOD_CONF_CTRL_0)
(Continued)
Bit Name
13 CONF_MOD_MMC2_CLK_
SEL_R
12 CONF_MOD_COM_MCLK
_12_48_SEL_R
11 CONF_MOD_USB_HOST_
UART_SELECT_R
10 CONF_MOD_USB_HOST_
LB_ARB_EN_R
9 CONF_MOD_USB_HOST_
HHC_UHOST_EN_R
Notes: 1) This function has been removed. Writing a 1 or a 0 to this register is acceptable. However, it is recommended
to write a 0, in case functions are added to this register space in the future.
68 Initialization
Base Address = 0xFFFE 1000, Offset Address = 0x80
Function
This register selects the clock used for the
MMC/SD2 module:
0: 48-MHz MMC2_DPLL_CLK from the ULPD.
1: ARM_XOR_CLK from OMAP clock module
This bit determines whether MCLK of the
device outputs the system clock or the 48-MHz
clock (selection must be in accordance in ULPD
and IO_CTRL).
0: MCLK is system clock.
1: MCLK is 48-MHz clock (or divided down).
0: Disables UART multiplexing on USB port 1.
1: Enables UART multiplexing on USB port 1.
Not currently used.
Enable input for functional-mode clocking of
USB_HHC.
0: Internal functional mode 48-MHz and
12-MHz clocks are disabled. USB_HHC cannot
function as a USB host.
1: Internal functional mode 48-MHz and
12-MHz clocks are enabled.
R/W Reset
R/W 0x0
R/W 0x0
R/W 0x0
R/W 0x0
R/W 0x0
SPRU752B