MCF5253 View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
Manufacturer
MCF5253 Datasheet PDF : 32 Pages
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Signal Description
Table 3. MCF5253 Signal Index (continued)
Signal Name
Mnemonic
Function
Input/ Reset
Output State
ISA bus read strobe
ISA bus write strobe
ISA bus wait signal
Chip Selects[2:0]
Buffer enable 1
Buffer enable 2
Transfer acknowledge
Wake Up
Serial Clock Line
Serial Data Line
Receive Data
Transmit Data
Request-To-Send
Clear-To-Send
Timer Output
IEC958 inputs
IEC958 outputs
IDE_DIOR/GPIO31
(CS2)
IDE_DIOW/GPIO32
(CS2)
1 ISA bus read strobe and 1 ISA bus
write strobe—allow connection of an
independent ISA bus peripheral,
such as an IDE slave device.
IDE_IORDY/GPIO33
ISA bus wait line available for both
busses
CS0/CS4
CS1/QSPICS3/GPIO28
Chip selects bits 2 through 0—
enable peripherals at programmed
addresses. CS0 provides boot ROM
selection.
BUFENB1/GPIO29
BUFENB2/GPIO30
Two programmable buffer
enables—allow seamless steering of
external buffers to split data and
address bus in sections.
TA/GPIO12
Transfer Acknowledge signal.
WAKEUP/GPIO21
SCL0/SDATA1_BS1/GPIO41
SCL1/TXD1/GPIO10
SDA0/SDATA3/GPIO42
SDA1/RXD1/GPIO44
Wake-up signal input
Clock signal for Dual I2C module
operation
Serial data port for second I2C
module operation
SDA1/RXD1/GPIO44
RXD0/GPIO46
EF/RXD2/GPIO6
Receive serial data input for UART
SCL1/TXD1/GPIO10
TXD0/GPIO45
XTRIM/TXD2/GPIO0
Transmit serial data output for UART
DDATA3/RTS0/GPIO4
Signals sent from UART0/1 that it is
DDATA1/RTS1/SDATA2_BS2/GPIO2 ready to receive data
DDATA2/CTS0/GPIO3
Signals sent to UART0/1 that data
DDATA0/CTS1/SDATA0_SDIO1/GPIO1 can be transmitted to peripheral
SDATAO1/TOUT0/GPIO18
Capability of output waveform or
pulse generation
EBUIN1/GPIO36
EBUIN2/SCLKOUT/GPIO13
EBUIN3/CMD_SDIO2/GPIO14
QSPICS0/EBUIN4/GPIO15
Audio interfaces to IEC958 inputs
EBUOUT1/GPIO37
QSPICS1/EBUOUT2/GPIO16
Audio interfaces to IEC958 outputs
In/Out
In/Out
In/Out
Out
In/Out
In/Out
In/Out
In/Out
In
In/Out
In/Out
In
Out
Out
In
Out
In
Out
–
–
–
negated
–
–
–
–
–
–
–
–
–
–
–
–
–
Serial data in
SDATAI1/GPIO17
SDATAI3/GPIO8
Audio interfaces to serial data inputs In
–
MCF5253 ColdFire Processor Data Sheet: Technical Data, Rev. 2
Freescale Semiconductor
7
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