TS68EN360
7.9
040 Bus Type Slave Mode Bus Arbitration AC Electrical Specifications
Table 7-8.
GND = 0 VDC, TC = -55 to +125°C. The electrical specifications in this document are preliminary (See Figure
7-25)
25.0 MHz
33.34 MHz
Number Characteristic
Min
Max
–
Min
Max
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
231
232(1)
233
234
235
236
237
238
Address, Transfer Attributes High Impedance to Clock High
7
–
4
7
0
–
–
–
6
–
4
6
0
–
–
–
Clock High to BG Low
20
20
–
15
15
–
Clock High to BG High
BB High to Clock High (040 output)
BB High Impedance to Clock High (040 output)
Clock High to BB Low (360 Output)
Clock High to BB High (360 Output)
Clock Low to BB High Impedance (360 output)
–
–
20
20
20
15
15
15
Note:
1. BG remains low until either the SDMA or the IDMA requests the external bus.
Figure 7-25. TS68040 Companion Mode Arbitration
040 BUS MASTER
360 BUS MASTER
C2
C1
S0
S1
S2
S3
S5
S4
CLKO1
(OUTPUT)
A31-A0
(I/O)
231
TRANSFER
ATTRIBUTES
(INPUT)
232
233
BG
(OUTPUT)
234
237
BB
(I/O)
235
238
236
61
60
BCLRO
(OUTPUT)
141
140
BCLRI
(INPUT)
Notes: 1. TS68040 Transfer Attribute Signals = SIZx, TTx, TMx, R/W, LOCK.
2. BG always remains asserted until either the SDMA or the IDMA requests the external bus
39
2113B–HIREL–06/05
ATMEL [ ATMEL ]
