WM8802
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Clock source; RDA TA output setting:
REGISTER ADDRESS
CCB address: 0xE8;
Command address: 5
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
0
1
0
1
0
0
CAU
CAL
DI15
DI14
DI13
DI12
DI11
DI10
DI9
DI8
0
RDTMUT
RDTSTA
RDTSEL
0
RCKSEL
OCKSEL
SELMTD
SELMTD
Output clock source switching setting
0: Simultaneously switch R system and S system according to
OCKSEL. (initial value)
1: Switch R system according to RCKSEL and fix S system to XIN.
OCKSEL
RCKSEL
RDTSEL
RDTSTA
RDTMUT
Clock source setting when SELMTD = 0
0: Use XIN clock as source during PLL lock. (initial value)
1: Use XIN clock as source regardless of PLL status.
Clock source setting when SELMTD = 1
0: Use XIN clock as source during PLL lock. (initial value)
1: Use XIN clock as source regardless of PLL status.
RDATA output setting during PLL unlock
0: Output SDIN data during PLL unlock. (initial value)
1. Mute during PLL unlock.
RDATA output setting
0: According to RDTSEL (initial value)
1: Output SDIN input data regardless of PLL status.
RDATA mute setting
0: Output data selected with RDTSEL.
1: Muted
When the oscillation amplifier is set to permanent continuous operation using AMPOPR[0:1] or if
changes are set not to be reflected to the error flag using FSERR, OCKSEL and RCKSEL can switch
the clock source while maintaining the RERR status. However, RERR outputs an error during
switching if none of these settings are performed.
A clock synchronized to the SDIN input data is selected to input data to SDIN.
The XIN source can be switched while maintaining the PLL locked status. However, since clock and
data output switching can be set individually for each, it is recommended to select mute or SDIN data
for the output data during XIN source switching.
If AMPOPR[0:1] is set to automatically stop the oscillation amplifier during PLL locked, XIN source
switching from the PLL locked status is executed only after the resonator is oscillating stably. Output
data switching is also done at this time according to XIN source switching.
PP Rev 1.1 April 2004
46
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
