MSAN-141 Zarlink Semiconductor, Inc., MSAN-141 Datasheet - Page 24

• Manufacturer Part Number: MSAN-141
• Description: Implementation Details of the MT8930B-31B S-T Interface
• Manufacturer: Zarlink Semiconductor, Inc.

MSAN-141
8.3 Transparent Option
The Trans bit (B2) in the HDLC Control Register 1
can be set to provide transparent data transfer by
disabling the protocol functions. The transmitter no
longer generates the Flag, Abort and Idle sequences
nor does it insert the zeros and calculate the FCS.
A-224
Retransmission
Request
Error
N
Valid Packet
Figure 28 - Receive Packet Algorithm
Good
FCS
?
Y
N
The receiver section will also disable the protocol
functions like Flag, Abort, Idle Detection, Zero
Deletion, FCS Check and Address Comparison.
This option allows the use of the FIFOs for raw data
transfer without the associated overhead of the
HDLC format. It should be noted that none of the
protocol related status or interrupt bits are applicable
Session
End
Stop
Y
N
Y
Y
Y
Read RxFIFO
Read RxFIFO
Read FIFO
Read Byte
Read Byte
RxFIFO
RxFIFO
N
Empty
Status
Y
Status
Empty
Status
Status
Start
First
Byte
Byte
Last
?
?
?
?
N
N
Application Note
Receiver
Enable