Advance Information
MT9074
Bit
Name
Functional Description
Bit Name
Functional Description
7 - 2 ADR16-11 Address 16 - 11. A six bit
address used for comparison
with the first byte of the received
address. ADR16 is MSB.
7 - 0 BIT7-0 This eight bit word is tagged with the
two status bits from the control register
1 (EOP and FA), and the resulting 10
bit word is written to the TX FIFO. The
FIFO
status
is
not
changed
1
ADR10
Address 10. This bit is used in
address comparison if a seven
bit address is being checked for
(control bit four of control register
2 is set).
immediately after a write or read
occurs. It is updated after the data has
settled and the transfer to the last
available position has finished.
Table 142 - TX FIFO Write Register
(Page B & C, Address 12H)
0
A1EN
First
Address
Comparison
Enable. When this bit is high, the
above six (or seven) bit address
is used in the comparison of the
first address byte.
Bit Name
Functional Description
If address recognition is enabled,
any packet failing the address
comparison will not be stored in
the RX FIFO. A1EN must be high
for All-call (1111111) address
recognition for single byte
address. When this bit is low, this
bit mask is ignored in address
comparison
7 - 0 BIT7-0 This is the received data byte read
from the RX FIFO. The status bits of
this byte can be read from the status
register. The FIFO status is not
changed immediately when a write or
read occurs. It is updated after the
data has settled and the transfer to the
last available position has finished.
Table 140 - HDLC Address Recognition Register
Table 143 - RX FIFO Read Register
(Page B & C, Address 12H)
1
(Page B & C, Address 10H)
Bit
Name
Functional Description
7 - 1 ADR26-20 Address 26 - 20. A seven bit
address used for comparison with
the second byte of the received
address. ADR26 is MSB. This
mask is ignored (as well as first
byte mask) if all call address
(1111111) is received.
0
A2EN
Second Address Comparison
Enable. When this bit is set high,
the above seven bit address is
used in the comparison of the
second address byte.
If address recognition is enabled,
any packet failing the address
comparison will not be stored in
the RX FIFO. A2EN must be high
for All-call address recognition.
When this bit is low, this bit mask
is ignored in address comparison
Table 141 - HDLC Address Recognition
Register2 (Page B & C, Address 11H)
99
MITEL [ MITEL NETWORKS CORPORATION ]
