WM8608 ETC-unknow, WM8608 Datasheet - Page 46

• Manufacturer Part Number: WM8608
• Description: The Wm8608 Comprises A High Performance Multi-channel Pwm Digital Power Amplifier Controller. Simply By Adding Appropriate Power Output Stages A Multi-channel Power Amplifier May Be Built. Six Identical Full Audio Bandwidth Channels, Plus A Reduced B
• Manufacturer: ETC-unknow

WM8608
EXTERNAL POWER SUPPLY CLOCK
w
RESET
The WM8608 device can be reset writing to the Reset register as defined in Table 51.
Table 51 Reset
Note: RESET or RLENA will be applied at the end of the register write and released at the beginning
of the next register write. I.e. to reset the OPDIS register write 1 to bit 0 of the Reset register and
them write 0 to bit 0.
The WM8608 device can generate a clock signal for an external PSU (Power Supply Unit) which is
available at the CLKPSU pin.
Figure 24 External Power Supply Clock
Table 52 PSU Clock
Note: See Table 45 for specification of f
R30 (1Eh)
Reset
R31 (1Fh)
PSU
REGISTER ADDRESS
REGISTER
ADDRESS
CLKPSU
BIT
2:1
4:3
0
ENPSU
CLKPSU[1:0]
DCYPSU[1:0]
BIT
all
0
LABEL
RLENA
RESET
LABEL
t
HCLKPSU
PRF
.
0
00
00
DEFAULT
t
PCLKPSU
DEFAULT
0
0
CLKPSU enable
1: enabled
CLKPSU frequency
00: CLKPSU = f
01: CLKPSU = f
10: CLKPSU = f
11: CLKPSU = f
CLKPSU duty cycle
00: t
01: t
10: t
11: t
Writing 1 to bit 0 of the register will
reset OPDIS
Writing all 1’s to the register will
reset the device and register
settings
hclkpsu
hclkpsu
hclkpsu
hclkpsu
/t
/t
/t
/t
pclkpsu
pclkpsu
pclkpsu
pclkpsu
DESCRIPTION
DESCRIPTION
PRF
PRF
PRF
PRF
= 0.5 (50%)
= 0.125 (12.5%)
= 0.0625 (6.25%)
= 0.03125 (3.125%)
PP Rev 1.5 March 2004
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