CN8478 Datasheet, PDF (121/221 Pages) Conexant Systems, Inc – Multichannel Synchronous Communications Controller (MUSYCC)

CN8478/CN8474A/CN8472A/CN8471A
Multichannel Synchronous Communications Controller (MUSYCC™)
5.0 Memory Organization
5.2 Descriptors
Tables 5-24 and 5-25 list the transmit and receive buffer status descriptors and
their descriptions.
Table 5-24. Transmit Buffer Status Descriptor
Bit
Field
Name
Value
Description
31
OWNER
30
RSVD
29
EOM
28:14
13:0
RSVD
BLEN[13:0]
0
Host Owns Buffer. MUSYCC has relinquished control of buffer back to host. MUSYCC
is done processing buffer.
1
MUSYCC Owns Buffer. Until MUSYCC relinquishes control, the data in this descriptor
is being used by MUSYCC.
0
Reserved.
0
End of Message Indicator. Copied from Transmit Buffer Descriptor.
1
End of Message Indicator. Copied from Transmit Buffer Descriptor.
0
Reserved.
Buffer Length. The number of octets from data buffer transmitted. In general this
would equal the allocated buffer size.
100660E
Conexant
5-35