SA3488 Datasheet, PDF (14/20 Pages) Sames – CMOS 256 X 256 DIGITAL SWITCHING MATRIX

SA3488
INSTRUCTION TABLES
The most significant digits of OR2 A7, A6, A5 are a copy of the PCM selected output bus;
the least significant digits or OR2 are the opcode while C8 is the control bit. In all cases
parentheses () define actual register contents.
INSTRUCTION 1: CHANNEL CONNECTION/DISCONNECTION
Control Signals
Data Bus
Match C/D CS WR RD D7 D6 D5 D4 D3 D2 D1 D0 Notes
X 0 0 0 1 X X X X X Bi2 Bi1 Bi0 1^st Data Byte:selected input bus
X 0 0 0 1 X X X Ci4 Ci3 Ci2 Ci1 Ci0 2^nd Data Byte: selected input
channel
X 0 0 0 1 X X X X X Bo2 Bo1 Bo0 3^rd Data Byte: selected output
bus
X 0 0 0 1 X X X Co4 Co3 Co2 Co1 Co0 4^thData Byte: selected output
channel
Yes/No 1 0 0 1 X X X X 0 0 0 1 Instruction Opcode
Yes 0 0 1 0 C7 C6 C5 C4 C3 C2 C1 C0 0R1 : CM content copy,
(1 1 1 1 1 1 1 1) that is for mismatch
(Bi2 Bi1 Bi0 Ci4 Ci3 Ci2 Ci1 Ci0) condition or match
condition
Yes 1 0 1 0 A7 A6 A5 C8 0 0 0 1 OR2
(Bo2 B01 Bo0 1 0 0 0 1)
(Bo2 Bo1 Bo0 0 0 0 0 1)
INSTRUCTION 2: OUTPUT CHANNEL DISCONNECTION
Control Signals
Match C/D CS WR RD D7
X 0001X
X 0001X
Yes 1 0 0 1 X
Data Bus
D6 D5 D4 D3 D2 D1 D0 Notes
X X X X Bo2 Bo1 Bo0 1^stData Byte: selected output
bus
X X Co4 Co3 Co2 Co1 Co0 2^nd Data Byte: selected
output channel
X X X 0 0 1 0 Instruction Opcode
Yes 0 0 1 0 1 1 1 1 1 1 1 1 OR1 : CM Content Copy
(output channel is inactive)
Yes 1 0 1 0 A7 A6 A5 1 0 0 1 0 OR2
(Bo2 Bo1 Bo0 1 0 0 1 0)
sames
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