wm9713 Wolfson Microelectronics plc, wm9713 Datasheet - Page 22

• Manufacturer Part Number: wm9713
• Description: Ac?97 Audio + Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

WM9713L
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Clock mode and division ratios are controlled by register 44h as shown in Table 3.
Table 3 Clock Muxing and Division Control
44h
REGISTER
ADDRESS
14:12
11:8
7
5:3
2
1
0
BIT
S
S
CLKSRC
PENDIV
CLKBX2
CLKAX2
CLKMUX
EXT
EXT
LABEL
[6:4]
[3:0]
000 (div 1)
0000 (div 1)
1 (ext clk)
000 (div 16)
0 (Off)
0 (Off)
0 (MCLKA)
DEFAULT
Hi-Fi Block Clock Division Control
000 = f
001 = f/2
…
111 = f/8
Voice DAC Clock Division Control
0000 = f
0001 = f/2
1111 = f/16
AC97 CLK Source Control
1 = External clock
0 = PLL clock
AUXADC Clock Division Control
000 = f/16
001 = f/12
010 = f/8
011 = f/6
100 = f/4
101 = f/3
110 = f/2
111 = f
MCLKB Multiplier Control
0 = Normal
1 = Multiply by 2
MCLKA Multiplier Control
0 = Normal
1 = Multiply by 2
External Clock Source Control
0 = Use MCLKA
1 = Use MCLKB
Note: On power-up clock must be present
on MCLKA and must be active for 2 clock
cycles after switching to MCLKB
…
DESCRIPTION
PP Rev 3.2 September 2008
Pre-Production
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