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Chip Configuration Module (CCM)
Freescale Semiconductor
9-5
9.3.4
Miscellaneous Control Register (MISCCR)
The MISCCR register provides clock source selection and configuration for internal clocks, as well as
SSI/timer DMA mux control and other miscellaneous control functionality.
Address: 0xFC0A_0010 (MISCCR)
Access: Supervisor read/write
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
0
PLL
LOCK LIMP
0
0
0
LCD
CHEN
SSI
PUE
SSI
PUS
TIM
DMA
SSI
SRC
0
0
USB
DIV
USB
SRC
W
Reset
0
0
1
0
0
0
0
1
1
1
1
0
0
0
1
1
Reset value depends on RCON RLIMP selection; 0 for PLL operation, 1 for low-power divider operation.
2
Reset value depends on RCON PLLMODE selection; 0 for 180 MHz operation, 1 for 240 MHz operation.
Figure 9-5. Miscellaneous Control Register (MISCCR)
Table 9-5. MISCCR Field Description
Field
Description
15–14
Reserved, should be cleared.
13
PLLLOCK
PLL lock status. Indicates if the PLL is locked. The PLLLOCK bit is read-only. Writing to PLLLOCK has no effect.
0 PLL is not locked.
1 PLL is locked.
12
LIMP
Limp mode enable. Selects between the PLL and the low-power clock divider as the source of all system clocks.
0 Normal operation; PLL drives system clocks.
1 Limp mode; low-power clock divider drives system clocks.
Note: The transient behavior of the system when writing this bit cannot be predicted. When any USB wake-up
event is detected, this bit is cleared, LIMP mode is exited, and the PLL begins the process of relocking and
driving the system clocks.
11–9
Reserved, should be cleared.
8
LCDCHEN
LCDC internal clock enable. Selects whether the internal clock input to the LCD controller is enabled.
0 LCDC internal clock disabled
1 LCDC internal clock enabled
7
SSIPUE
SSI RXD/TXD pull enable. Enables the internal weak pull cells on any external pin where the SSI receive data
(RXD) function or SSI transmit data (TXD) function is available. The affected pins include SSI_RXD, SSI_TXD,
U1RXD, and U1TXD.
0 SSI data pin weak pull cells disabled.
1 SSI data pin weak pull cells enabled.
Note: The SSIPUE bit only enables the pull cells when the SSI RXD and TXD functions are currently selected
for the affected pins. See the
Chapter 13, “General Purpose I/O Module,”
for information on how to enable
the SSI functions on those pins.
6
SSIPUS
SSI RXD/TXD pull select. Selects whether the internal weak pull cells enabled by the SSIPUE bit are pull up or
pull down.
0 SSI data pins are pulled down.
1 SSI data pins are pulled up.
Note: The SSIPUS bit has no effect when the SSIPUE bit is cleared.
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...