参数资料
型号: AS3693B-ZTQW
厂商: ams
文件页数: 15/33页
文件大小: 0K
描述: IC LED CTLR 16-CH W/PWM 64EPTQFP
标准包装: 1,000
拓扑: PWM
输出数: 16
内部驱动器:
类型 - 主要: 背光
类型 - 次要: RGB,白色 LED
输出电压: 50V
安装类型: 表面贴装
封装/外壳: 64-TQFP 裸露焊盘
供应商设备封装: 64-TQFP-EP(10x10)
包装: 带卷 (TR)
AS3693B
7.3
PWM – modes
austria micro systems
Table 14– PWM CONTROL
Addr: 0fh
PWM_MODE
Controls the different PWM modes and Internal or external PWM
Bit
Bit Name
Default
Access
Description
00 Sync mode
01 Async - mode
1:0
PWM_MODE
01
R/W
10 not used
11 not used
NOTE: Sync mode can only be used with
PWM INT = 0.
2
3
4
PWM INT/EXT
VSYNC_INVERT
PWMINVERT
1
0
0
R/W
R/W
R/W
0 PWM generator uses external H and Vsync clock
1 PWM generator uses internal 500kHz clock.
0 VSYNC active high (PWM triggers on rising edge)
1 VSYNC active low (PWM triggers on falling edge)
0 PWM normal (PWM starts with “1” after delay)
1 PWM inverted(PWM starts with “0” after delay)
Note: If Vsync or Hsync is not used, connect it to GND.
7.3.1
SYNC mode (PWM_MODE = 00)
In this mode the PWM is synchronized with VSYNC and HSYNC.
Reg: N
Vsync
Delay
Reset
Or
R
Reg: P
Hsync
Setup options:
Delay (N) = registers 0h32 to 0h51
High Time (M) = registers 0h12 to 0h31
PWM Period (P) = register 0h10
Counter
Compare
Compare
Reg: M
PWM
PWMINVERT( Register 0x0F )
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Revision 1.21 / 2011-09-30
14 - 32
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