Rev. 3.0, 03/01, page 58 of 390
System Peripheral Clock Control Register (SPCCR) [cont’d]
Bit
Description
Default
11
FIRCLK: FIR Controller Clock Control. When this bit is set, the FIR clock will be halted.
The FIR clock will run normally after this bit is cleared. Note that this bit can be cleared
only Twkst ms later, the UCKOSC bit has already been cleared.
0
10
SIRCLK: SIR Controller Clock Control. When this bit is set, the SIR clock will be halted.
The SIR clock will run normally after this bit is cleared. Note that this bit can be cleared
only Twkst ms later, the UCKOSC bit has already been cleared.
0
9
SCDICLK: Serial Codec Interface Clock Control. When this bit is set, the SCDI clock will
be halted. The SCDI clock will run normally after this bit is cleared.. Note that this bit can
be cleared only Twkst ms later after either AFEOSC bit or UCKOSC bit, which is
determined by bit SCDICKS, is cleared.
0
8
KBCCLK: Key Board Controller Clock Control. When this bit is set, the KBC command
clock will be halted. The KBC command clock will run normally after this bit is cleared.
Note that this bit can be cleared only Twkst ms later, the UCKOSC bit has already been
cleared.
0
7
USBCLK: USB Controller Clock Control. When this bit is set, the USB clock will be halted.
The USB clock will run normally after this bit is cleared. Note that this bit can be cleared
only Twkst ms later, the UCKOSC bit has already been cleared.
0
6
AFECLK: AFE interface Controller Clock Control. When this bit is set, the AFE interface
clock will be halted. The AFE interface clock will run normally after this bit is cleared. Note
that this bit can be cleared only Twkst ms later, the AFEOSC bit has already been
cleared.
0
5 - 2
Reserved.
0
1
UCKOSC: UCK Oscillator/Crystal Control. When this bit is set, the UCK oscillator/crystal
will be halted. The UCK oscillator/crystal will start to run after this bit is cleared. This bit
must be carefully used. This bit can only be set when all the clocks that use the UCK as a
source clock have been halted.
0
0
AFEOSC: AFECK Oscillator/Crystal Control. When this bit is set, the AFECK
oscillator/crystal will be halted. The AFECK oscillator/crystal will start to run after this bit is
cleared. This bit must be carefully used. This bit can only be set when all the clocks that
use the AFECK as a source clock have been halted.
0
Note:
The parameter, Twkst = 15 ms.
Содержание HD64465
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