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参数资料
型号： MSC7115VF1000
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 数字信号处理
英文描述： 32-BIT, 266 MHz, OTHER DSP, PBGA400
封装： 17 X 17 MM, BGA-400
文件页数： 16/56页
文件大小： 1820K
代理商： MSC7115VF1000
Specifications
MSC7115 Low-Cost 16-bit DSP with DDR Controller Data Sheet, Rev. 11
Freescale Semiconductor
23
2.5.3.1
Power-On Reset (PORESET) Pin
Asserting PORESET initiates the power-on reset flow. PORESET must be asserted externally for at least 16 CLKIN cycles after
external power to the MSC7115 reaches at least 2/3 VDD.
2.5.3.2
Reset Configuration
The MSC7115 has two mechanisms for writing the reset configuration:
From a host through the host interface (HDI16)
From memory through the I2C interface
Five signal levels (see Chapter 1 for signal description details) are sampled on PORESET deassertion to define the boot and
operating conditions:
BM[0–1]
SWTE
H8BIT
HDSP
2.5.3.3
Reset Timing Tables
Table 17 and Figure 4 describe the reset timing for a reset configuration write.
Table 16. Reset Actions for Each Reset Source
Reset Action/Reset Source
Power-On Reset
(PORESET)
Hard Reset
(HRESET)
Soft Reset
(SRESET)
External only
External or
Internal (Software
Watchdog or Bus
Monitor)
JTAG Command:
EXTEST, CLAMP,
or HIGHZ
Configuration pins sampled (refer to Section 2.5.3.1 for
details).
Yes
No
PLL and clock synthesis states Reset
Yes
No
HRESET Driven
Yes
No
Software watchdog and bus time-out monitor registers
Yes
Clock synthesis modules (STOPCTRL, HLTREQ, and
HLTACK) reset
Yes
Extended core reset
Yes
Peripheral modules reset
Yes
Table 17. Timing for a Reset Configuration Write
No.
Characteristics
Expression
Unit
1
Required external PORESET duration minimum
16/FCLKIN
clocks
2
Delay from PORESET deassertion to HRESET deassertion
521/FCLKIN
clocks
Note:
Timings are not tested, but are guaranteed by design.
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MSC711XADS
相关PDF资料
PDF描述
MSC7116VF1000 0-BIT, 266 MHz, OTHER DSP, PBGA400
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MSC8103VT1100F 64-BIT, 68.75 MHz, OTHER DSP, PBGA332
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相关代理商/技术参数
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