scf5250 Freescale Semiconductor, Inc, scf5250 Datasheet - Page 15

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

devices connected to the I
be accomplished with an open-drain output.
4.9
The following signals transfer serial data between the two UART modules and external peripherals.
4.10 Timer Module Signals
The following signal provides an external interface to Timer0.
Freescale Semiconductor
Serial Module Signals
Serial Module Signal
Serial Module Signal
I
2
Request To Send
I
c Module Signal
I
2
Clear To Send
2
Transmit Data
Receive Data
Timer Output
C Serial Clock
C Serial Data
SCF5250 Integrated ColdFire® Microprocessor Data Sheet, Rev. 1.1
2
C bus drive the bus, they will either drive logic-0 or high-impedance. This can
Table 6. Serial Module Signals
Table 7. Timer Module Signals
Table 5. I
bidirectional signals are the clock signal for first and second I
operation. The I
mode; all I
Signals are multiplexed
The SDA0/SDATA3/GPIO42 and SDA1/RXD1/GPIO44 bidirectional
signals are the data input/output for the first and second serial I
interface.
Signals are multiplexed
serial data is received by the DUART. Data is sampled on RxD[1:0] on
the rising edge of the serial clock source, with the least significant bit
received first.
SCL1/TXD1/GPIO10 output signals. Data is transmitted on the falling
edge of the serial clock source, with the least significant bit transmitted
(LSB) first. When no data is being transmitted or the transmitter is
disabled, these two signals are held high. TxD[1:0] are also held high in
local loopback mode.
request-to-send outputs indicate to the peripheral device that the
DUART is ready to send data and requires a clear-to-send signal to
initiate transfer.
Peripherals drive the DDATA2/CTS0/GPIO3 and
DDATA0/CTS1/SDATA0_SDIO1/GPIO1 inputs to indicate to the
SCF5250 serial module that it can begin data transmission.
The SDATAO1/TOUT0/GPIO18 programmable output pulse or toggle
on various timer events.
The SCL0/SDATA1_BS1/GPIO41 and SCL1/TXD1/GPIO10
The RXD0/GPIO46 and SDA1/RXD1/GPIO44 are the inputs on which
The DUART transmits serial data on the TXD0/GPIO45 and
The DDATA3/RTS0/GP104 and DDATA1/RTS1/SDATA2_BS2/GPIO2
2
C Module Signals
2
C devices drive this signal to synchronize I
2
C module controls this signal when the bus is in master
Description
Description
Description
2
Signal Descriptions
C timing.
2
C module
2
C
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