参数资料
型号: ACS8509
元件分类: 数字传输电路
英文描述: ATM/SONET/SDH SUPPORT CIRCUIT, PQFP100
封装: LQFP-100
文件页数: 51/68页
文件大小: 703K
代理商: ACS8509
ADVANCED COMMUNICATIONS
FINAL
DATASHEET
Revision 2.00/January 2006 Semtech Corp.
Page 55
www.semtech.com
ACS8509 SETS
Intel Mode
In Intel mode, the device is configured to interface with a microprocessor using a 80x86 type bus as parallel data +
address. Figure 17 and Figure 18 show the timing diagrams of read and write accesses for this mode.
Figure 17 Read Access Timing in INTEL Mode
Note: (i) Timing with RDY. If RDY not used, tpw1 becomes 180 ns.
Table 34 Read Access Timing in INTEL Mode (for use with Figure 17)
Symbol
Parameter
MIN
TYP
MAX
tsu1
Setup A valid to CSBfalling edge
0 ns
-
tsu2
Setup CSBfalling edge to RDBfalling edge
0 ns
-
td1
Delay RDBfalling edge to AD valid
-
177 ns
td2
Delay CSBfalling edge to RDY active
-
13 ns
td3
Delay RDBfalling edge to RDYfalling edge
--
14 ns
td4
Delay RDBrising edge to AD high-Z
-
10 ns
td5
Delay CSBrising edge to RDY high-Z
-
9 ns
tpw1
RDB Low time
486 ns(i)
--
tpw2
RDY Low time
310 ns
-
472 ns
th1
Hold A valid after RDBrising edge
0 ns
-
th2
Hold CSB Low after RDBrising edge
0 ns
-
th3
Hold RDB Low after RDYrising edge
0 ns
-
tp
Time between consecutive accesses (RDBrising edge to RDBfalling edge,
or RDBrising edge to WRBfalling edge)
320 ns
-
F8110D_009ReadAccIntel_01
CSB
address
Z
data
WRB
RDB
tpw1
th2
th1
tsu2
A
tsu1
td3
tpw2
th3
AD
td1
td4
RDY
td2
td5
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相关代理商/技术参数
参数描述
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