mh1020 Music Semiconductors, Inc., mh1020 Datasheet - Page 12

• Manufacturer Part Number: mh1020
• Description: Hla Packaged Asynchronous Data Recognition And Recall Processor
• Manufacturer: Music Semiconductors, Inc.

Table 4: Standard and Enhanced Mode Device Select Response
Notes:
1.
2.
3.
4.
5.
6.
7.
Case
Case
6
6
2
3
4
5
1
2
3
4
5
Exceptions are:
A) A write to the Device Select register is always active in all devices;
B) A write to the Page Address register is active in the device with /FI LOW and /FF HIGH; and
C) The Set Full Flag (SFF) instruction is active in the device with /FI LOW and /FF HIGH.
If /MF is disabled in the Control register, Internal /MA is forced HIGH preventing a Case 6 response.
This is NO for a MOV instruction involving Memory at Next Free address if /FI is HIGH or the device is full.
This is NO if the Persistent Destination is Memory at Next Free address and /FI is HIGH or the device is full.
For a Command read following a TCO NF instruction, this is YES if the device contains the first empty location in a daisy chain (i.e., /FI LOW and
/FF HIGH) and NO if it does not.
This is NO for a MOV or VBC instruction involving Memory at Highest-Priority match.
This is NO if the Persistent Destination is Memory at Highest-Priority match.
2
2
Internal
/EC(int)
Internal
/EC(int)
1
1
0
0
0
1
1
1
0
0
0
/MA(int)
/MA(int)
Internal
Internal
X
X
X
X
X
X
1
0
0
1
0
External
External
/MI
/MI
X
X
X
X
X
X
0
1
1
0
1
DS ≠ FFFFH and
DS ≠ FFFFH and
Enhanced Mode
Device Select
Device Select
Standard Mode
DS = FFFFH
Register
Register
DS = PA
DS ≠ PA
DS = PA
DS ≠ PA
12
X
X
X
X
X
X
Command
Command
YES
YES
Write
Write
YES
YES
YES
YES
YES
NO
NO
NO
NO
3,6
3,6
3
3
3
3
3
1
1
YES
YES
Write
YES
YES
Write
YES
YES
YES
Data
Data
NO
NO
NO
NO
3,7
3,7
4
4
4
4
4
Command
Command
Read
YES
Read
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
5
5
5
5
5
5
Read
Read
Data
Data
YES
YES
YES
YES
Rev. 1
NO
NO
NO
NO
NO
NO
NO