mcf5307cft90b Freescale Semiconductor, Inc, mcf5307cft90b Datasheet - Page 368

• Manufacturer Part Number: mcf5307cft90b
• Description: Mcf5307 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Overview
17-4
Frequency control PLL
Divide control PCLK to
BCLKO
Chip selects[7:0]
Byte enable[3:0]/
Byte write enable[3:0]
Output enable
Row address strobe
Column address strobe
DRAM write
Synchronous column
address strobe
Synchronous row
address strobe
Synchronous clock
enable
Synchronous edge
select
DMA request
Receive data
Transmit data
Request-to-send
Clear-to-send
Timer input
Timer outputs
Signal Name
Table 17-1. MCF5307 Signal Index (Continued)
FREQ[1:0]
DIVIDE[1:0]
CS[7:0]
BE[3:0]/
BWE[3:0]
OE
RAS[1:0]
CAS[3:0]
DRAMW
SCAS
SRAS
SCKE
EDGESEL
DREQ[1:0]
RxD[1:0]
TxD[1:0]
RTS[1:0]
CTS[1:0]
TIN[1:0]
TOUT[1:0]
Abbreviation
Section 17.8, “DMA Controller Module Signals”
Freescale Semiconductor, Inc.
Section 17.6, “Chip-Select Module Signals”
Section 17.11, “Parallel I/O Port (PP[15:0])”
Section 17.7, “DRAM Controller Signals”
For More Information On This Product,
Section 17.10, “Timer Module Signals”
Section 17.9, “Serial Module Signals”
Go to: www.freescale.com
MCF5307 User’s Manual
Indicates CLKIN frequency range.
Indicates the BCLKO/PSTCLK ratio.
Enables peripherals at programmed
addresses; CS0 provides boot ROM
selection.
BE[3:0] select bytes in memory.
Output enable for chip select read
cycles
DRAM row address strobe
DRAM column address strobe
Asserted for DRAM write; negated
for DRAM read
SDRAM column address strobe
SDRAM row address strobe
Clock enable for external SDRAM
Timing select for external SDRAM
External DMA transfer request;
multiplexed with PP[6:5]
Receive serial data input for UART
Transmit serial data output for UART
UART asserts when ready to
receive data query.
Signals UART that data can be sent
to peripheral
Clock input to timer or trigger to
timer value capture logic
Outputs waveform or pulse.
Function
I/O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
Reset
High
High
High
High
High
High
High
High
High
High
High
Low
—
—
—
—
—
User cfg 17-17
Pull-Up Page
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