參數(shù)資料
型號(hào): MCIMX31
廠(chǎng)商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: Multimedia Applications Processors
中文描述: 多媒體應(yīng)用處理器
文件頁(yè)數(shù): 23/170頁(yè)
文件大?。?/td> 1562K
代理商: MCIMX31
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Signal Descriptions
i.MX31/i.MX31L Advance Information, Rev. 1.4
Freescale Semiconductor
23
Preliminary
2.3.32
Watchdog Module (WDOG)
The Watchdog (WDOG) timer module protects against system failures by providing a method of escaping
from unexpected events or programming errors. Once the WDOG module is activated, it must be serviced
by software on a periodic basis. If servicing does not take place, the timer times out. Upon a time-out, the
WDOG Timer module either asserts the wdog signal or a system reset signal wdog_rst depending on
software configuration. The WDOG Timer module also generates a system reset via a software write to
the Watchdog Control Register (WCR), a detection of a clock monitor event, an external reset, an external
JTAG reset signal, or if a power-on-reset has occurred.
3
Signal Descriptions
This section:
Identifies and defines all device signals in text, tables, and (as appropriate) figures. Signals can be
organized by group, as applicable.
Contains pin-assignment/contact-connection diagrams, if the sequence of information in the data
sheet requires them to be included here. Otherwise, these figures appear in
Section 5, “Package
Information and Pinout.”
3.1
i.MX31 and i.MX31L I/O Pad Signal Settings
This section identifies and defines all device signals in
Table 4
on page 23
,
Table 6
on page 39
, and
Table 7
on page 56
.
3.1.1
Functional Multiplexing
Table 4
shows functional multiplexing information. Functional multiplexing allows the user to select the
function of each pin by configuring the appropriate GPIO registers when those pins are multiplexed to
provide different functions.
Table 4. Functional Multiplexing
Pin Name
Group
Description
Hardware
Mode 1
HW
Mode
2
SW_
MUX_
EN
Alt
Mode
1
Alt
Mode
2
Alt
Mode
3
Alt
Mode
4
Alt
Mode
5
Alt
Mode
6
GPIO
CAPTURE
Timer
Timer input Capture or
Timer1 input clock. GPIO
user for Memstick1 Card
detect
ATA_DATA14
sw_mux_ctl_
capture
[6:0]
CMP2
MCU1_
7
COMPARE
Timer
Timer Output Compare for
timers 1 2 3. GPIO used
for Memstick2 card detect
ATA_DATA15
sw_mux_ctl_
compare
[6:0]
CAP2
CMP3
ipp_epit
o1
ipp_epit
o2
MCU1_
8
WATCHDOG
_RST
WTDG
watchdog reset.
sw_mux_ctl_
watchdog_rs
t[6:0]
IPU_FL
ASH_S
TROBE
PWMO
PWM
PWM output.
ATA_IORDY
sw_mux_ctl_
pwmo[6:0]
PC_SP
KOUT
MCU1_
9
GPIO1_0
GPIO1
GPIO reserved for IRQs
sw_mux_ctl_
gpio1_0
[6:0]
EXTDM
A_0
MCU1_
0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCIMX31_07 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processors
MCIMX31_08 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processors
MCIMX31_09 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Multimedia Applications Processors
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