參數(shù)資料
型號(hào)： HE84G752B
廠商： King Billion Electronics Co., Ltd.
英文描述： 8-BIT MICRO-CONTROLLER
中文描述： 8位微控制器
文件頁數(shù)： 30/49頁
文件大?。?/td> 474K
代理商： HE84G752B
16.
Voice Output
KING BILLION ELECTRONICS CO., LTD
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電
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HE84G752B
HE80004 Series
January 21, 2005
This specification is subject to change without notice. Please contact sales person for the latest version before use.
30
V0.93
There are 7 or 8 bits DAC/PWM voice output available for user. The 7 bits DAC/PWM output format and
configuration are the same as the previous IC of HE80000 series. The 8 bits DAC/PWM format and
configuration are new designed and controlled by the VOC and PWMC registers. The selection of 7/8 bits
DAC/PWM output is by mask option
MO_8BVOC.
MO_8BVOC
0
1
Function
7-bit DAC/PWM output
8-bit DAC/PWM output
8-Bit DAC/PWM Output:
The Digital-to-Analog converter converts the 8-bit unsigned speech data which is written into PWMC
data register to proportional current output.
PWMC
Field
address Reset
0x0E
bit 7
DA7
bit 6
DA6
bit 5
DA5
bit 4
DA4
bit 3
DA3
bit 2
DA2
bit 1
DA1
bit 0
DA0
--
There are two output paths for the DAC. Either VO or DAO can be selected as output port of DAC by
VOC register when it is enabled. The VO output is primarily intended for speech generation, although it
is not necessary so, while the DAO output path can be used in conjunction with built-in OP comparator to
function as an Analog-to-Digital Converter as required in applications such as speech recording, speech
recognition or sensor interfaces.
OPO
OPIP
OPIN
DAO
PWMC[DATA]
VO
VOC[DAC]
VOC[OP]
R
DAC
+
-
1
0
OP
The DAC is enabled by DAC bit of VOC register. When DAC is enabled, the DAC output path can be
selected to output to DAO or VO pin by OP bit of VOC register.
VOC
Field
Reset
address
0x13
Bit 7
-
Bit 6
Bit 5
Bit 4
Bit 3
PWME
0
Bit 2
PWM
0
Bit 1
DAC
0
Bit 0
OP
0
PWM O/P driver
0
0
0
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