AS3588AQ Ver la hoja de datos (PDF) - austriamicrosystems AG

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AS3588AQ

DIGITAL TIME/SPACE CROSSPOINT SWITCH

austriamicrosystems AG 

Data Sheet

AS3588A

Instruction 5: Connection Memory Extraction

Control Signals

Data Bus

Comments

SEL C/D CS WR RD D7 D6 D5 D4 D3 D2 D1 D0

X 0 0 0 1 X X X X X BO2 BO1 BO0 Byte 1: PCM output line

X 0 0 0 1 X X X CO4 CO3 CO2 CO1 CO0 Byte 2: PCM output channel

X 1 0 0 1 X X X X 1 0 0 0 Instruction Byte

1 0 0 1 0 C7 C6 C5 C4 C3 C2 C1 C0 OR1: LSB of CM

1 1 0 1 0 A7 A6 A5 C8 OP3 OP2 OP1 OP0 OR2: MSB of CM

(BO2) (BO1) (BO0) C8 (1) (0) (0) (0) Data is from CM

Instruction 6: Channel 0 Extraction

Control Signals

Data Bus

Comments

SEL C/D CS WR RD D7 D6 D5 D4 D3 D2 D1 D0

X 0 0 0 1 X X X X X MI7 MI6 MI5 Byte 1: MSB of selection mask

X 0 0 0 1 X X X MI4 MI3 MI2 MI1 MI0 Byte 2: LSB of selection mask

1 1 0 0 1 X X X X 1 1 1 0 Instruction Byte

Mask Store Control

1 0 0 1 0 X X X X X X X X OR1: unchanged

1 1 0 1 0 N2 N1 N0 TN 1 1 1 0 OR2: see Note 1

First Data Transfer

1 0 0 1 0 X X X X X X X X OR1: unchanged

1 1 0 1 0 N2 N1 N0 Tn 1 1 1 0 OR2: see Note 2

Repeated Data Transfer

1 0 0 1 0 D7 D6 D5 D4 D3 D2 D1 D0 OR1: expected message

1 1 0 1 0 P2 P1 P0 Fn 1 1 1 0 OR2: See Note 3

Note 1: Reading OR 2 is optional after mask store or redefinition, because the instruction is only activated by a not zero mask

Note 2: After the mask store operation (N2 N1 N0) is the sum of activated channels; after DR it is the sum of active channels;

Tn = 1 means activation of the function after mask store. After DR only Tn=1 can appear to flag a not zero mask writing.

Note 3: Reading of OR2 is mandatory after DR in order to step the data transfer; reading OR1 is also needed to scan in the

descending order of priority. Only relevant messages are considered, that means only messages with a signature different from

01. (P2 P1 P0) is the PCM bus on which the message in OR1 was found; Fn is a continuation bit which flags with a 1/0 level

more / no more extraction will be performed.

Rev. 3.1

Page 8 of 15

July 1999

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