参数资料
型号: AT85C51SND3B1-7FTUL
厂商: Atmel
文件页数: 48/119页
文件大小: 0K
描述: IC DECODER/ENCODER DGTL 100CBGA
标准包装: 90
类型: 音频编码器/解码器
应用: 移动电话,手机,视频显示器
电压 - 电源,数字: 1.65 V ~ 3.6 V
安装类型: 表面贴装
封装/外壳: 100-TFBGA
供应商设备封装: 100-CTBGA(9x9)
包装: 托盘
34
AT85C51SND3B
7632D–MP3–01/07
Registers
Reset Value = 0000 0000b
Table 31. CKCON Register
CKCON (0.8Fh) – Clock Control Register
7
6
5
4
3
2
1
0
-
WDX2
OSCAMP
OSCF1
OSCF0
T1X2
T0X2
X2
Bit
Number
Bit
Mnemonic Description
7
-
Reserved
The value read from this bit is always 0. Do not set this bit.
6
WDX2
Watchdog Clock Control Bit
Set to select the oscillator clock divided by 2 as watchdog clock input (X2
independent).
Clear to select the peripheral clock as watchdog clock input (X2 dependent).
5
OSCAMP
Oscillator Amplifier Control Bit
Set to optimize power consumption by disabling the oscillator amplifier when an
external clock is used.
Clear to enable the oscillator amplifier in case of crystal usage (default).
4-3
OSCF1:0
Oscillator Frequency Range Bits
Set this bits according to Table 23 to optimize power consumption.
2
T1X2
Timer 1 Clock Control Bit
Set to select the oscillator clock divided by 2 as timer 1 clock input (X2
independent).
Clear to select the peripheral clock as timer 1 clock input (X2 dependent).
1
T0X2
Timer 0 Clock Control Bit
Set to select the oscillator clock divided by 2 as timer 0 clock input (X2
independent).
Clear to select the peripheral clock as timer 0 clock input (X2 dependent).
0
X2
System Clock Control Bit
Clear to select 12 clock periods per machine cycle (STD mode, FCPU = FPER =
F
OSC/2).
Set to select 6 clock periods per machine cycle (X2 mode, F
CPU = FPER = FOSC).
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