Datasheet

Bus Operation
MOTOROLA MCF5206e USER’S MANUAL 6-35
The flow chart shown is for four bursting transfers.
Figure 6-20. Bursting Word-, Longword-, and Line-Read Transfer with
Asynchronous Termination Flowchart
MCF5206e
SYSTEM
1. DRIVE ADDRESS ON A[27:0]
2. DRIVE R/W
TO READ (R/W = 1)
3. DRIVE SIZ[1:0] TO INDICATE WORD, LONGWORD OR LINE
4. DRIVE TT[1:0] AND ATM TO INDICATE APPROPRIATE
ACCESS TYPE
5. ASSERT TS
FOR ONE CLK CYCLE
1. NEGATE TS
2. DRIVE ATM TO INDICATE APPROPRIATE ACCESS TYPE
1. REGISTER DATA
2. INCREMENT APPROPRIATE ADDRESS BITS BASED ON
SIZ[1:0], A[3:0] AND PORT SIZE
1. DECODE ADDRESS AND SELECT THE APPROPRIATE
SLAVE DEVICE.*
2. ASSERT ATA
3. DRIVE DATA ON APPROPRIATE BYTE LANES BASED ON
SIZ[1:0], A[1:0] AND PORT SIZE
*TO INSERT WAIT STATES, ATA IS DRIVEN NEGATED.
1. DECODE ADDRESS AND SELECT THE APPROPRIATE
SLAVE DEVICE.*
2. ASSERT ATA
3. DRIVE DATA ON APPROPRIATE BYTE LANES BASED ON
SIZ[1:0], A[1:0] AND PORT SIZE
1. DECODE ADDRESS AND SELECT THE APPROPRIATE
SLAVE DEVICE.*
2. ASSERT ATA
3. DRIVE DATA ON APPROPRIATE BYTE LANES BASED ON
SIZ[1:0], A[1:0] AND PORT SIZE
1. DECODE ADDRESS AND SELECT THE APPROPRIATE
SLAVE DEVICE.*
2. ASSERT ATA
3. DRIVE DATA ON APPROPRIATE BYTE LANES BASED ON
SIZ[1:0], A[1:0] AND PORT SIZE
1. REGISTER DATA
2. RECOGNIZE THE TRANSFER IS DONE
1. REGISTER DATA
2. INCREMENT APPROPRIATE ADDRESS BITS BASED ON
SIZ[1:0], A[3:0] AND PORT SIZE
1. REGISTER DATA
2. INCREMENT APPROPRIATE ADDRESS BITS BASED ON
SIZ[1:0], A[3:0] AND PORT SIZE
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
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