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參數(shù)資料
| 型號(hào)： | MCM20014IBMN |
| 廠商： | MOTOROLA INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | 1/3” Color VGA Digital Image Sensor |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, CQCC48 |
| 封裝： | CERAMIC, LCC-48 |
| 文件頁數(shù)： | 11/54頁 |
| 文件大小： | 761K |
| 代理商： | MCM20014IBMN |
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MCM20014
MOTOROLA
11
The default is the linear curve, breakpoints can be se-
lected via the slope and breakpoint control bits on the
Post ADC Control Register. This function can be by-
passed to output 10-bit linear data.
Figure 13. Available Companding Curves
2.4 Additional Operational Conditions
The MCM20014 includes initialization, standby modes,
and external reference voltage outputs to afford the
user additional applications flexibility.
2.4.1 Initialization
The INIT input pin (#28) controls reinitialization of the
MCM20014. This serves to assure controlled chip and
system startup. Control is asserted via a logic high in-
put. This state must be held a minimum of 1 ms and a 1
ms
“
wait period
”
should be allowed before chip process-
ing to ensure that the start-up routines within the
MCM20014 have run to completion, and to guarantee
that all holding and bypass capacitors, etc. have
achieved their required steady state values.
Tasks which are accomplished during startup include:
reset of the utility programming registers and initializa-
tion to their default values (please refer to previous sec-
tion for settings), reset of all internal counters and
latches, and setup of the analog signal processing
chain.
2.4.2 Standby Mode
The standby mode option is implemented to allow the
user to reduce system power consumption during peri-
ods which do not require operation of the MCM20014.
This feature allows the user to extend battery life in low
power applications.
By utilizing this mode, the user may reduce dynamic
power consumption from 400mW, in the active process-
ing, 13 Million Samples per Second mode, to <50 mW
in the standby mode (note that dynamic power con-
sumption is also reduced in slower conversion speed
applications).
0
Data IN (10-bit)
D
511
255
127
63
191
0
255
127
63
31
15
47
79
95
111
1023
Reg 32
h
= 8F
h
Reg 32
h
= 8B
h
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