SCF5249VM140 FREESCALE [Freescale Semiconductor, Inc], SCF5249VM140 Datasheet - Page 24

• Manufacturer Part Number: SCF5249VM140
• Description: Integrated ColdFire Microprocessor
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Signal Descriptions
8.16 Queued Serial Peripheral Interface (QSPI)
8.17 Crystal Trim
The XTRIM_GPIO38 output produces a pulse-density modulated phase/frequency difference signal to be
used after low-pass filtering to control varicap-voltage to control crystal oscillation frequency. This will
lock the crystal to the incoming digital audio signal.
8.18 Clock Out
The MCLK1/GPO39 and /MCLK2/GPO42 can serve as general purpose I/Os or as DAC clock outputs.
When programmed as DAC clock outputs, these signals are directly derived from the crystal.
8.19 Debug and Test Signals
These signals interface with external I/O to provide processor status signals.
8.19.1 Test Mode
The TEST[3:0] inputs are used for various manufacturing and debug tests. For normal mode these inputs
should be always be tied low. Use TEST0 to switch between background debug mode and JTAG mode.
Drive TEST0 high for debug mode.
8.19.2 High Impedance
The assertion of HI_Z will force all output drivers to a high-impedance state. The timing on HI_Z is
independent of the clock.
24
Serial Module Signal
QSPIDOUT_GPIO26
The QSPI interface is a high-speed serial interface allowing transmit and
receive of serial data.
QSPICS0_GPIO29
QSPICS1_GPIO24
QSPICS2_GPIO21
QSPICS3_GPIO22
SCL_QSPICLK
SDA_QSPIDIN
Table 13. Queued Serial Peripheral Interface (QSPI) Signals
SCF5249 Integrated ColdFire® Microprocessor Data Sheet, Rev. 3
Multiplexed signal IIC interface clock or QSPI clock output
Function select is done via PLLCR register.
Multiplexed signal IIC interface data or QSPI data input.
Function select is done via PLLCR register.
QSPI data output
4 different QSPI chip selects
NOTE
Description
Freescale Semiconductor