參數(shù)資料
型號(hào): ADCRM
英文描述: Analog-to-Digital Reference Manual
中文描述: 模擬到數(shù)字參考手冊(cè)
文件頁(yè)數(shù): 11/46頁(yè)
文件大?。?/td> 415K
代理商: ADCRM
ADC
REFERENCE MANUAL
FUNCTIONAL OVERVIEW
MOTOROLA
1-3
or by external sources. The ADCMCR also determines the privilege level at which
most ADC registers operate. Refer to
3.2 Module Configuration
mation.
for additional infor-
1.5 Bus Organization
The ADC bus interface unit (ABIU) serves as an interface between the ADC and the
intermodule bus (IMB). The IMB handles communication between the ADC and other
microcontroller modules and supplies timing signals to the ADC. For additional infor-
mation on the ABIU, refer to
3.1 ADC Bus Interface Unit
.
1.6 Memory Map
The ADC module is mapped into 32 words of address space (see
words are control and status registers, one word is digital port data, and 24 words pro-
vide access to the results of A/D conversion (eight addresses for each type of convert-
ed data). Two words are reserved for expansion. The addresses provided in
1
and elsewhere in this manual are offsets from the ADC base address. For the pre-
cise locations of these registers, consult the user's manual for the specific microcon-
troller unit (MCU). The column labeled “Access” in
are supervisor only and which can be programmed to operate at either access level.
Table 1-1
). Five
Table 1-
Table 1-1
specifies which registers
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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