参数资料
型号: S1S60000F00A100
元件分类: 微控制器/微处理器
英文描述: 1 CHANNEL(S), 2M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100
封装: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, QFP15-100
文件页数: 20/83页
文件大小: 1024K
代理商: S1S60000F00A100
S1S60000 Technical Manual
Rev.1.5
EPSON
21
Multiplex Bus
Some CPUs use parts or the whole of address lines commonly with data bus in time sharing. Before such CPUs
are connected to S1S60000, it is necessary to make HMUX “0” and to implement multiplex setting. After the
setting, a signal that latched HD[2:0] is used as the address instead of HA[2:0]. For the latch signal, use a signal
that becomes HIGH during address output period and that turns to LOW while the address is settled, and input it
to the following signal lines for each type:
Type0=HRD1#, Type1=HRD0#, Type2=HWR1#, Type5=HRD1#
However, multiplex bus cannot be set for Type 3 (Generic) and Type 6 (PCMCIA).
Fig.4.1 shows the CPU type selection flowchart.
Identify type of the target CPU based on its signal line and
then check whether an appropriate access is obtainable or not referencing the signal pattern of respective CPUs in
Tables 4.5 to 4.10.
If the selected pattern does not match the signal pattern, decode the signal externally so that
it matches the CPU type of Type 3 Generic or similar pattern.
Fig.4.1
Host Interface Type Selection Flowchart
Are Read signal
and Write signal
separated?
START
Is Write for upper
er byte
independent
?
Check referencing
Type0
Is it ISA type?
Y
N
Y
N
Check referencing
Type5
Y
Is it
PCMCIA
type?
N
Check referencing
Type6
Y
Is upper/lower byte
select signal
available?
Check referencing
Type1
Y
N
Check referencing
Type2
N
Connect to Type3
/lower byte
independent?
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