ST18D952 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST18D952' PDF : 67 Pages View PDF
ST18952
Table 5.1 Possible BSU register settings
EN_I
1
1
1
1
0
0
0
0
EN_X EN_Y Operation
Allowed or forbidden
1
1 Exchanges enabled on I/X/Y spaces
Allowed
1
0 Exchanges enabled on I and X spaces
Only DTACK generation on Y space
Allowed
0
1 Exchanges enabled on I and Y spaces
Only DTACK generation on X space
Forbidden
(X direct & I/Y through BSU)
0
0 Exchanges enabled on I space
Forbidden
Only DTACK generation on X and Y spaces (X direct & I through BSU)
1
1 Exchanges enabled on X and Y spaces
Only DTACK generation on I space
Allowed
1
0 Exchanges enabled on X space
Allowed
Only DTACK generation on I and Y spaces
0
1 Exchanges enabled on Y space
Forbidden
Only DTACK generation on I and X spaces (X direct & Y through BSU)
0
0 No exchange
Allowed
Only DTACK generation on I, X and Y spaces
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