![NXP Semiconductors LPC43Sxx Скачать руководство пользователя страница 187](http://html1.mh-extra.com/html/nxp-semiconductors/lpc43sxx/lpc43sxx_user-manual_1721827187.webp)
UM10503
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
187 of 1441
NXP Semiconductors
UM10503
Chapter 13: LPC43xx/LPC43Sxx Clock Generation Unit (CGU)
13.6.7 Integer divider register B, C, D
11
AUTOBLOCK
Block clock automatically during frequency
change
0
R/W
0
Disabled. Autoblocking disabled
1
Enabled. Autoblocking enabled
23:12
-
Reserved
-
-
28:24
CLK_SEL
Clock source selection. All other values
are reserved.
0x01
R/W
0x00
32 kHz oscillator
0x01
IRC (default)
0x02
ENET_RX_CLK
0x03
ENET_TX_CLK
0x04
GP_CLKIN
0x06
Crystal oscillator
0x07
PLL0USB
0x08
PLL0AUDIO
0x09
PLL1
31:29
-
Reserved
-
-
Table 139. IDIVA control register (IDIVA_CTRL, address 0x4005 0048) bit description
…continued
Bit
Symbol
Value
Description
Reset
value
Access
Table 140. IDIVB/C/D control registers (IDIVB_CTRL, address 0x4005 004C; IDIVC_CTRL,
address 0x4005 0050; IDIVC_CTRL, address 0x4005 0054) bit description
Bit
Symbol
Value
Description
Reset
value
Access
0
PD
Integer divider power down
0
R/W
0
Enabled. IDIV enabled (default)
1
Power-down
1
-
Reserved
-
-
5:2
IDIV
Integer divider B, C, D divider values
(1/(IDIV + 1))
0000 = 1 (default)
0001 = 2
...
1111 = 16
0000
R/W
10:6
-
Reserved
-
-
11
AUTOBLOCK
Block clock automatically during frequency
change
0
R/W
0
Disabled. Autoblocking disabled
1
Enabled. Autoblocking enabled
23:12
-
Reserved
-
-