scf5250 Freescale Semiconductor, Inc, scf5250 Datasheet - Page 12

• Manufacturer Part Number: scf5250
• Description: Scf5250 Integrated Coldfire Microprocessor Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

Signal Descriptions
Linear regulator input
Linear regulator ground
High Impedance
Debug Data
Processor Status
Processor clock
Test Clock
Test Reset/Development
Serial Clock
Test Mode Select/ Break
Point
Test Data Input /
Development Serial Input
Test Data
Output/Development Serial
Output
4.2
Many pins have an optional GPIO function.
4.3
These signals provide the external bus interface to the SCF5250.
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Signal Name
General purpose input is always active, regardless of state of pin.
General purpose output or primary output is determined by the appropriate setting of the Pin
Multiplex Control Registers, GPIO-FUNCTION, GPIO1-FUNCTION and PIN-CONFIG.
At Power-on reset, all pins are set to their primary function.
GPIO
SCF5250 Bus Signals
LININ
LINGND
HI-Z
DDATA0/CTS1/SDATA0_SDIO1/GPIO1
DDATA1/RTS1/SDATA2_BS2/GPIO2
DDATA2/CTS0/GPIO3
DDATA3/RTS0/GPIO4
PST0/GPIO50
PST1/GPIO49
PST2/INTMON2/GPIO48
PST3/INTMON1/GPIO47
PSTCLK/GPIO51
TCK
TRST/DSCLK
TMS/BKPT
TDI/DSI
TDO/DSO
SCF5250 Integrated ColdFire® Microprocessor Data Sheet, Rev. 1.1
Table 3. SCF5250 Signal Index (continued)
Mnemonic
Input, typically I/O supply (3.3V)
Assertion Tri-states all output signal
pins.
Displays captured processor data and
break-point status.
Indicates internal processor status.
processor clock output
Clock signal for IEEE 1149.1A JTAG.
Multiplexed signal that is
asynchronous reset for JTAG
controller. Clock input for debug
module.
Multiplexed signal that is test mode
select in JTAG mode and a hardware
break-point in debug mode.
Multiplexed serial input for the JTAG or
background debug module.
Multiplexed serial output for the JTAG
or background debug module.
Function
Freescale Semiconductor
Output
Input/
In/Out
In/Out
Out
Out
In
In
In
In
In
In
Reset
State
Hi-Z
Hi-Z