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
124 of 1269
NXP Semiconductors
UM10503
Chapter 11: LPC43xx Clock Generation Unit (CGU)
11.6.16 BASE_CGU_OUT0_CLK to BASE_CGU_OUT1_CLK register
This register controls the clock output to the spare CGU outputs pins CGU_OUT0 and
CGU_OUT1. All clock generator outputs can be monitored through this pin.
28:24
CLK_SEL
Clock-source selection.
0x01
R/W
0x00
32 kHz oscillator
0x01
IRC (default)
0x02
ENET_RX_CLK
0x03
ENET_TX_CLK
0x04
GP_CLKIN
0x05
Reserved
0x06
Crystal oscillator
0x07
Reserved
0x08
PLL0AUDIO
0x09
PLL1
0x0C
IDIVA
0x0D
IDIVB
0x0E
IDIVC
0x0F
IDIVD
0x10
IDIVE
31:29
-
Reserved
-
-
Table 90.
BASE_APLL_CLK control register (BASE_APLL_CLK, addresses 0x4005 00C0)
bit description
…continued
Bit
Symbol
Value
Description
Reset
value
Access
Table 91.
BASE_CGU_OUT0_CLK to BASE_CGU_OUT1_CLK control register
(BASE_CGU_OUT0_CLK to BASE_CGU_OUT1_CLK , addresses 0x4005 00C4 to
0x4005 00C8) bit description
Bit
Symbol
Value
Description
Reset
value
Access
0
PD
Output stage power down
0
R/W
0
Output stage enabled (default)
1
power-down
10:1
-
Reserved
-
-
11
AUTOBLOCK
Block clock automatically during frequency
change
0
R/W
0
Autoblocking disabled
1
Autoblocking enabled
23:12
-
Reserved
-
-