最新免费av在线观看,亚洲综合一区成人在线,中文字幕精品无码一区二区三区,中文人妻av高清一区二区,中文字幕乱偷无码av先锋

CS493122-CL Datasheet

  • CS493122-CL

  • Cirrus Logic [Multi-Standard Audio Decoder Family]

  • CIRRUS

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預覽

CS49300 Family DSP
8.
BOOT PROCEDURE & RESET
pertinent configuration messages. Writing the
KICKSTART message to the CS493XX begins the
audio decode process. The KICKSTART message
will also be described in the user鈥檚 guide for each
application. Until the KICKSTART has been sent,
the decoder is in a wait state.
MNEMONIC
SOFT_RESET
RESERVED
RESERVED
DOWNLOAD_BOOT
BOOT_SUCCESS_RECEIVED
Table 9. Boot Write Messages
MNEMONIC
BOOT_START
BOOT_SUCCESS
APPLICATION_FAILURE
BOOT_ERROR
INVALID_MSG
BOOT_ERROR
INIT_FAILURE
INIT_FAILURE
BAD_CHECKSUM
Table 10. Boot Read Messages
VALUE
0x01
0x02
0xF0
0xFA
0xFB
0xFC
0xFD
0xFE
0xFF
VALUE
0x000001
0x000002
0x000003
0x000004
0x000005
In this section the process of booting and
downloading to the CS493XX will be covered as
well as how to perform a soft reset. Host boot and
autoboot and reset are covered in this section.
8.1. Host Boot
A flow diagram of a typical serial download
sequence and a typical parallel download sequence
will be presented, as well as pseudocode
representing a download sequence from the
programmers perspective. The pseudocode is
written in a general sense where function calls are
made to Write_* and Read_*. The * can be
replaced by I
2
C or SPI for the serial download
sequence, and INTEL or MOTO for the parallel
download sequence, depending on the mode of host
communication. For each case the general
download algorithm is the same.
The download and boot procedure is accomplished
with RESET (pin 36), and the communication pins
discussed in
Section 6, 鈥淐ontrol鈥?on page 32.
The
flow diagrams in
Figure 33. Typical Serial Boot
and Download Procedure,
and Figure 34. Typical
Parallel Boot and Download Procedure, illustrate
typical boot and download procedures. When
reading in serial mode, you must check that
INTREQ is low to start reading. Similarly, in
parallel mode you must check HOUTRDY.
Table 9
defines the boot write messages and
Table 10
defines the boot read messages in mne-
monic and actual hex value. These messages will
be used in the boot sequence.
Hardware configuration messages are used to
define the behavior of the DSP鈥檚 audio ports. A
more detailed description of the different hardware
configurations can be found in the
Section 11,
鈥淗ardware Configuration鈥?on page 72.
The software configuration messages are specific
to each application. The application code user鈥檚
guide for each application provides a list of all
52
8.1.1. Serial Download Sequence
The following is a detailed description of a
serial
download sequence for the CS493XX.
Note:
When reading from the chip in a serial
communication mode, the host must wait for the
interrupt request (INTREQ) to fall before
starting the read cycle.
1) A download sequence is started when the host
issues a hard reset and holds the mode pins
appropriately (WR, RD, and PSEL).
2) The host should then send the boot message
DOWNLOAD_BOOT (0x000004). This
causes the CS493XX to initialize itself for
download.
3) If
the initialization was successful the
DS339PP4

CS493122-CL PDF文件相關(guān)型號

CS493292-CL,CS493302-CL

CS493122-CL相關(guān)型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！