WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 105
WM8959
Manufacturer Part Number
WM8959
Description
Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet
1.WM8959.pdf
(155 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
WM8959
Manufacturer:
WolfsonMicro
Quantity:
887
Company:
Part Number:
WM8959ECS/RV
Manufacturer:
VISHAY
Quantity:
8 620
- Current page: 105 of 155
- Download datasheet (2Mb)
w
Pre-Production
SYSCLK CONTROL
MCLK may be inverted by setting register bit MCLK_INV. Note that it is not recommended to change
the control bit MCLK_INV while the WM8959 is processing data as this may lead to clock glitches
and signal pop and clicks.
The SYSCLK_SRC bit is used to select the source for SYSCLK. The source may be either MCLK or
the PLL output. The selected source is divided by the SYSCLK pre-divider MCLK_DIV to generate
SYSCLK. The selected source may also be adjusted by the MCLK_DIV divider. These register fields
are described in Table 56. See “PLL” for more details of the Phase Locked Loop clock generator.
The WM8959 supports glitch-free SYSCLK source selection. When both clock sources are running
and SYSCLK_SRC is modified to select one of these clocks, a glitch-free clock transition will take
place. The de-glitching circuit will ensure that the minimum pulse width will be no less than the pulse
width of the faster of the two clock sources.
When the initial clock source is to be disabled before changing to the new clock source, the
CLK_FORCE bit must also be used to force the clock source transition to take place. In this case,
glitch-free operation cannot be guaranteed.
Table 56 MCLK and SYSCLK Control
R7 (07h)
REGISTER
ADDRESS
14
13
12:11
10
BIT
SYSCLK_SRC
CLK_FORCE
MCLK_DIV
[1:0]
MCLK_INV
LABEL
DEFAULT
0b
0b
00b
0b
SYSCLK Source Select
0 = MCLK
1 = PLL output
Forces Clock Source Selection
0 = Existing SYSCLK source (MCLK or
PLL output) must be active when
changing to a new clock source.
1 = Allows existing MCLK source to be
disabled before changing to a new clock
source.
SYSCLK Pre-divider. Clock source
(MCLK or PLL output) will be divided by
this value to generate SYSCLK.
00 = Divide SYSCLK by 1
01 = Reserved
10 = Divide SYSCLK by 2
11 = Reserved
MCLK Invert
0 = Master clock not inverted
1 = Master clock inverted
DESCRIPTION
PP, May 2008, Rev 3.1
WM8959
105
Related parts for WM8959
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Specifications: Manufacturer: Wolfson Microelectronics ; Product Category: ADC (A/D Converters) ; RoHS: Details ; Number of Converters: 1 ; Number of ADC Inputs: 1 ; Conversion Rate: 6 MSPs ; Resolution: 16 bit ; Input Type: Voltage ; Interface
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
WM8192 : 16-BIT, 6MSPS Cis/ccd Image Digitiser With Multiplexed Output
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
The WM8976 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
WM8141 : 12-BIT 6MSPS Cis/ccd Analogue Front End/digitiser
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
WM8143 : 10 or 12-BIT, 4MSPS Analogue Front End For CCD Image Sensors
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
WM8143 : 10 or 12-BIT, 4MSPS Analogue Front End For CCD Image Sensors
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
Integrated 10-bit Data Acquisition System For Imaging Applications
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
12-bit ( 8+4-bit ) Linear Sensor Image Processor
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet:
Part Number:
Description:
WM8148 : 12-BIT/12 MSPS Ccd/cis Analogue Front End/digitiser
Manufacturer:
Wolfson Microelectronics Ltd.
Datasheet: