STLC5466 datasheet(76/130 Pages) STMICROELECTRONICS

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STLC5466

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VII.5 - Receive Command / Indicate Interrupt

VII.5.1 - Receive Command / Indicate Interrupt when TSV = 0

Time Stamping not validated (bit of GCR Register)

This word is located in the Command/Indicate interrupt queue; IQSR Register indicates the size of this

interrupt queue located in the external memory.

CFR

: Correctly Frame Received

CFR =1, a receive frame is ended with a correct CRC. The end of the frame is located in the last

descriptor if several Descriptors.

bit15

bit8

bit7

bit 0

S0=0

S0=1

: New Status.

Before writing the features of event in the external memory the Interrupt Controller reads the NS

bit:

if NS = 0, the Interrupt Controller puts this bit at ‘1’ when it writes the new primitive which has

been received.

if NS = 1, the Interrupt Controller puts ICOV bit at ‘1’ to generate an interrupt (IR Register).

When the microprocessor has read the status word, it puts this bit at ‘0’ to acknowledge the new

status. This location becomes free for the Interrupt Controller.

: G0 = 0, GCI 0 corresponding to DIN4 input and DOUT4 output.

G0 = 1, GCI 1 corresponding to DIN5 input and DOUT5 output.

A2/0

: COMMAND/INDICATE Channel 0 to 7 being owned by GCI 0 or GCI 1

S1/0

: Primitive or 6 bit word or AIS received

C6/1

: New Primitive received twice consecutively. Case of S0=S1=0

A, E,

S1/S4

6 bits received twice consecutively. Case of S0=1 S1=0.

Word stored in shared memory

Primitive C1/6 received from GCI Multiplex 0 corresponding to DIN4

Primitive C1/6 received from GCI Multiplex 1 corresponding to DIN5

A, E, S1/S4 bits from any input timeslot switched to one timeslot 4n+3 of GCI Multiplex 0 with-

out outgoing to DOUT4

A, E, S1/S4 bits from any input timeslot switched to one timeslot 4n+3 of GCI 1 without outgo-

ing to DOUT5

AIS detected during more 30 ms from any input timeslot and switched to B1, B2 channels (16

bits) of the GCI Multiplex 0 (DOUT4) in transparent mode or not

AIS detected during more 30 ms from any input timeslot and switched to B1, B2 channels (16

bits) of the GCI Multiplex 1 (DOUT5) in transparent mode or not.

Reserved

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