LSI Specification

MB86617A

<Flow chart for received data before storing in Asynchronous receive FIFO

<Host>

Read Header CRC Error (INT14) interrupt.

Read Asynchronous Receive FIFO

full(INT16)

Read Asynchronous packet

received(INT9)

<Device>

Receive packet to self-node.

Check Header CRC.

OK

 

NG

 

Report Header CRC Error(INT14)

 

interrupt and duscard received packet.

Packet receiving process

 

completed

 

recv busy bit

‘0’

‘1’

Transmit “Ack_busy_X” and

discard received packet.

Packet receiving process

completed

Store Asynchronous packet into

Async hronous receive buffer.

Transmit Acknowledge packet

Receive buffer=full

No

Yes

Report Asynchronous Receive FIFO full

(INT16) interrupt(assert XINT).

Report Asynchronous packet receive

(INT9) interrupt(assert XINT).

recv busy bit=1

Packet receiving process completed

Figure 11.4.1 Flow example for received data before storing in Asynchronous receive FIFO

Rev.1.0

123

Fujitsu VLSI

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Fujitsu MB86617A manual 123