ACS8514 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
ACS8514
Synchronous Equipment Timing Source Partner IC for 2nd T4 DPLL, Accurate Monitoring & Input Extender
Semtech Corporation
'ACS8514' PDF : 86 Pages View PDF
ACS8514 SETS Buddy
ADVANCED COMMS & SENSING FINAL
DATASHEET
Motorola Mode
In MOTOROLA mode, the device is configured to interface with a microprocessor using a 680x0 type bus as parallel data
+ address. Figure 5 and Figure 6 show the timing diagrams of read and write accesses for this mode.
Figure 5 Read Access Timing in MOTOROLA Mode
Table 10 Read Access Timing in MOTOROLA Mode (for use with Figure 5 )
Symbol
Parameter
MIN
tsu1
Setup A valid to CSBfalling edge
4 ns
tsu2
Setup WRB valid to CSBfalling edge
0 ns
td1
Delay CSBfalling edge to AD valid (consecutive Read - Read)
Delay CSBfalling edge to AD valid (consecutive Write - Read)
12 ns
16 ns
td2
Delay CSBfalling edge to DTACKrising edge
-
td3
Delay CSBrising edge to AD high-Z
-
td4
Delay CSBrising edge to RDY high-Z
-
tpw1
CSB Low time (consecutive Read - Read)
CSB Low time (consecutive Write - Read)
25 ns
25 ns
tpw2
RDY High time (consecutive Read - Read)
RDY High time (consecutive Write - Read)
12 ns
12 ns
th1
Hold A valid after CSBrising edge
0 ns
th2
Hold WRB valid after CSBrising edge
0 ns
th3
Hold CSB Low after RDYfalling edge
0 ns
tp
Time between (consecutive Read - Read) accesses (CSBrising edge to CSBfalling edge) 15 ns
tp
Time between (consecutive Write - Read) accesses (CSBrising edge to CSBfalling edge) 160 ns
TYP
-
-
-
-
-
-
-
62 ns
193 ns
-
-
-
-
-
-
-
MAX
-
-
40 ns
192 ns
13 ns
10 ns
9 ns
-
-
49 ns
182 ns
-
-
-
-
-
Revision 3.00 April 2007 © Semtech Corp.
Page 20
www.semtech.com
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