Signal Descriptions
MCF52110 ColdFire® Integrated Microcontroller Reference Manual, Rev. 1
2-8
Freescale Semiconductor
Preliminary
2.7
External Interrupt Signals
describes the external interrupt signals.
2.8
Queued Serial Peripheral Interface (QSPI)
describes the QSPI signals.
Table 2-5. Clocking Modes
CLKMOD[1:0]
XTAL
Configure the Clock Mode
00
0
PLL disabled, clock driven by external oscillator
00
1
PLL disabled, clock driven by on-chip oscillator
01
N/A
PLL disabled, clock driven by crystal
10
0
PLL in normal mode, clock driven by external oscillator
10
1
PLL in normal mode, clock driven by on-chip oscillator
11
N/A
PLL in normal mode, clock driven by crystal
Table 2-6. External Interrupt Signals
Signal Name
Abbreviation
Function
I/O
External Interrupts
IRQ[7:1]
External interrupt sources.
I
Table 2-7. Queued Serial Peripheral Interface (QSPI) Signals
Signal Name
Abbreviation
Function
I/O
QSPI Synchronous
Serial Output
QSPI_DOUT Provides the serial data from the QSPI and can be programmed to be
driven on the rising or falling edge of QSPI_CLK.
O
QSPI Synchronous
Serial Data Input
QSPI_DIN
Provides the serial data to the QSPI and can be programmed to be
sampled on the rising or falling edge of QSPI_CLK.
I
QSPI Serial Clock
QSPI_CLK
Provides the serial clock from the QSPI. The polarity and phase of
QSPI_CLK are programmable.
O
Synchronous Peripheral
Chip Selects
QSPI_CS[3:0] QSPI peripheral chip selects that can be programmed to be active
high or low.
O
