UM0851 datasheet(98/245 Pages) STMICROELECTRONICS

98 / 245 page

Communication device drivers

UM0851

98/245

Doc ID 16604 Rev 2

4.7.5

Configuration options

4.7.6

References

●

MMC framework in Linux “drivers/mmc/ and include/linux/mmc/” for Linux 2.6.27

●

SPEAr Arasan SDIO controller driver “drivers/mmc/host/spr_arasan_sdio.c” and

“drivers/mmc/host/spr_arasan_sdio.h”.

4.8

UART driver

4.8.1

Hardware overview

The UART (universal asynchronous receiver/transmitter) (ARM PL011) is an advanced

microcontroller bus architecture (AMBA) compliant system-on-ship (SoC) peripheral that is

developed, tested and licensed by ARM. It is commonly used to implement serial

communication.

The UART is an AMBA slave module that connects to the advanced peripheral bus (APB).

UART is one of the most commonly used serial interface peripherals. It is intended to

perform:

●

Serial-to-parallel conversion on data received from a peripheral device

●

Parallel-to-serial conversion on data transmitted to the peripheral device.

UART PL011 provides the following features:

●

Programmable use of UART or IrDA SIR input/output.

●

Separate 16x8 transmit and 16x12 receive first-In, first-out memory buffers (FIFOs) to

reduce CPU interrupts.

●

Programmable baud rate generator. This enables division of the reference clock by

(1x16) to (65535 x16) and generates an internal x16 clock. The divisor can be a

Table 31.

SDIO configuration options

Configuration option

Comment

CONFIG_MMC

This option enables MMC framework support in Linux.

CONFIG_ MMC_BLOCK

This option enables MMC block device driver support

CONFIG_ MMC_TEST

This option enables the MMC test driver. It is a

development driver that performs a series of reads and

writes to a memory card in order to expose certain well

known bugs in host controllers.

CONFIG_ SPEAR_SDIO_ARASAN

This option enables SPEAr ARASAN SDIO host

controller support.

CONFIG_ MMC_DEBUG

This option enables MMC debugging prints.

UM0851 bảng dữ liệu(PDF) 98 Page - STMicroelectronics

UM0851 bảng dữ liệu(HTML) 98 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL