FUJITSU MB86617A - Manual (Page 67)

LSI S pecification MB86617A
Rev.1.0 Fujitsu VLSI
62
7.28. Data Bridge Transmit/Receive Status Register [A]
Data bridge transmit/receive status register indicates status of packet to be transmitted/received by bridge-Ach.
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
4Eh R
Tx
busy-
A
Rx
busy-
A
Rx
1STP-
A
Rx
EMI
chg-A
Rx o/e
chg-A
Rx
dlen
err-A
-
Tx
late-A
Rx
late-A
Rx 56
err-A
Rx
stype
err-A
BRG
FIFO
full-A
BRG
FIFO
emp-
A
Rx
DBC
err-A
Rx
CIP
err-A
Rx
FMT
err-A
Initial Value ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’ ‘1’ ‘0’ ‘0’ ‘0’
BIT Bit Name Action Value Function
0
Indicates that bridge-Ach is not in the process of transmit .
Indicates ‘0’ when Tx end- A (10h-bit14) is set at ‘1’ and transmit process is
stopped.
15 Tx busy-A Read
1
Indicates that bridge-Ach is in the process of transmit.
Indicates ‘1’ when Tx start -A (10h-bit15) is set at ‘1’ and transmit process is
started.
0
Indicates that bridge-Ach is not in the process of receive.
Indicates ‘0’ when Rx end-A (3Ch -bit6) is set at ‘1’ and receive process is stopped.
14 Rx busy-A Read
1
Indicates that bridge-Ach is in the process of receive.
Indicates ‘1’ when Rx start-A (3Ch -bit7) is set at ‘1’ and receive process is started.
0
Indicates that Isochronous packet received after starting receive process is not the
first packet received.
13 Rx 1STP-A Read
1
Indicates that the first Isochronous packet is received after receive process is
started.
Clears to ‘0’ by lead of this register.
0
Indicates that EMI information of received Isochronous packet header is not
changed.
12
Rx EMI
chg-A
Read
1
Indicates that EMI informatio n of received Isochronous packet header has changed
from just former EMI information of packet received by Isochronous-cycle.
Clears to ‘0’ by lead of this register.
0
Indicates that odd/even information of received Isochronous packet header is not
changed.
11 Rx o/e chg-A Read
1
Indicates that odd/even information of received Isochronous packet header has
changed from just former odd/even information of packet received by
Isochronous-cycle.
Clears to ‘0’ by lead of this register.