mc68ec040v Freescale Semiconductor, Inc, mc68ec040v Datasheet - Page 156

• Manufacturer Part Number: mc68ec040v
• Description: M68040 User Manual
• Manufacturer: Freescale Semiconductor, Inc

7- 14
1) LATCH DATA
2) SAMPLE TBI AND TCI (FOR FIRST TRANSFER)
1) NEGATE TIP (IF REQUIRED)
1) SET R/W TO READ
2) DRIVE ADDRESS ON A31–A0
3) DRIVE USER PAGE ATTRIBUTES ON UPA1, UPA0
4) DRIVE SIZE ON SIZ1, SIZ0 (LINE)
5) DRIVE TRANSFER TYPE ON TT1, TT0
6) DRIVE TRANSFER MODIFIER ON TM2–TM0
7) CIOUT BECOMES VALID
8) ASSERT TS FOR ONE CLOCK
9) ASSERT TIP
START NEXT CYCLE
ADDRESS DEVICE
ACQUIRE DATA
END OF BURST
PROCESSOR
Figure 7-10. Line Read Transfer Flowchart
Freescale Semiconductor, Inc.
For More Information On This Product,
M68040 USER’S MANUAL
Go to: www.freescale.com
WHEN FOUR LONG WORDS
1) REMOVE DATA FROM D31–D0
2) NEGATE TA (IF NECESSARY)
3) INCREMENT ADDRESS BITS A3, A2 (IF NECESSARY)
TRANSFERRED
1) DECODE ADDRESS
2) PLACE DATA ON D31–D0
3) ASSERT TA
TERMINATE CYCLE
EXTERNAL DEVICE
PRESENT DATA
UNTIL FOUR LONG WORDS
TRANSFERRED
MOTOROLA