Mmc System Test Register (Mmc_Syst) - Texas Instruments OMAP5910 Technical Reference Manual

MMC/SD Host Controller
Data Time-out Prescaler Enable (DTO_PS_En)
Table 7–113. MMC System Test Register (MMC_SYST)
Bit Name
15–14 Reserved
13 RDY_dat
12 DAT-dir
11 DAT3_dat
10 DAT2_dat
9 DAT1_dat
8 DAT0_dat
7 CMD-dir
6 CMD_dat
5 MMC_CK_dat
4 SPI_CK_dat
3 CS3_dat
2 CS2_dat
1 CS1_dat
0 Reserved
7-156
When this bit (5) is set to 1 by the LH, the data time-out set in MMC_DTO regis-
ter is x1024 the number of MMC_CLK cycles.
-
0: x1 (Prescaler off)
-
1: x1024 (Prescaler on)
Value after reset is low.
The MMC system test register (MMC_SYST) is used to control the signals that
connect to I/O pins when the module is configured in system test (SYSTEST)
mode (see Table 7–113).
Description
Ready/busy input signal data value
DAT[3–0] signals direction
DAT3 input/output signal data value
DAT2 input/output signal data value
DAT1 input/output signal data value
DAT0/SI input/output signal data value
CMD/SO signal direction
CMD/SO input/output signal data value
MMC clock output signal data value
SPI clock output signal data value
C/S3 output signal data value
C/S2 output signal data value
C/S1 output signal data value