FUJITSU MB86617A - Manual (Page 38)

LSI S pecification MB86617A
Rev.1.0 Fujitsu VLSI
33
7.5. Receive Acknowledge Indicate Register
Receive Acknowledge indicate register is the register that indicates received Acknowledge packet addressed to itself.
Read out this register after interrupt report of “Asynchronous packet send”.
AD R/W
Bit
15
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
0Ah R - - - - - - - - Receive ack-code Receive ack-parity
Initial Value ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ “0 h” “0 h”
BIT Bit Name Action Value Function
15 - 8 reserved Read - Always indicate ‘0’.
7 - 4
Receive
Acknowledge-co
de
Read -
Indicate code of received Acknowledge packet addressed to it.
(MSB: bit7, LSB: bit5)
3 - 0
Receive
Acknowledge-par
ity
Read -
Indicate parity of received Acknowledge packet addressed to it.
(MSB: bit3, LSB: bit0)
Note) In case of not receiving Acknowledge within specified time, this register indicates “00h ” and reports interrupt of “Acknowledge
missing”.