UM10503
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
146 of 1269
NXP Semiconductors
UM10503
Chapter 12: LPC43xx Clock Control Unit (CCU)
12.5.1 Power mode register
This register contains a single bit, PD, that disables all output clocks with Wake-up
enabled. (W = 1 in the CCU branch clock configuration registers,
). Clocks
disabled by writing to this register are reactivated when a wake-up interrupt is detected or
when a 0 is written into the PD bit.
12.5.2 Base clock status register
Each bit in this register indicates whether the specified base clock can be safely switched
off. A logic zero indicates that all branch clocks generated from this base clock are
disabled. Hence, the base clock can also be switched off. A logic one value indicates that
there is still at least one branch clock running.
Remark:
Reactivate the base clock before writing to the configuration register of the
branch clock.
-
-
0x508 to
0x5FC
Reserved
-
CLK_APB2_SSP1_CFG
R/W
0x600
CLK_APB2_SSP1 configuration register
0x0000 0001
CLK_APB2_SSP1_STAT
R
0x604
CLK_APB2_SSP1 status register
0x0000 0001
-
-
0x608 to
0x6FC
Reserved
-
CLK_APB0_SSP0_CFG
R/W
0x700
CLK_APB0_SSP0 configuration register
0x0000 0001
CLK_APB0_SSP0_STAT
R
0x704
CLK_APB0_SSP0 status register
0x0000 0001
-
-
0x708 to
0x7FC
Reserved
-
CLK_SDIO_CFG
R/W
0x800
CLK_SDIO configuration register (for
SD/MMC)
0x0000 0001
CLK_SDIO_STAT
R
0x804
CLK_SDIO status register (for SD/MMC)
0x0000 0001
Table 101. Register overview: CCU2 (base address 0x4005 2000)
Name
Access
Address
offset
Description
Reset value
Reference
Table 102. CCU1/2 power mode register (CCU1_PM, address 0x4005 1000 and CCU2_PM,
address 0x4005 2000) bit description
Bit
Symbol
Value
Description
Reset
value
Access
0
PD
Initiate power-down mode
0
R/W
0
Normal operation.
1
Clocks with wake-up mode enabled (W = 1) are
disabled.
31:1
-
Reserved.
-
-