![](http://datasheet.mmic.net.cn/380000/-PD98405_datasheet_16745025/-PD98405_180.png)
CHAPTER 5 SAR FUNCTION
180
A34
AAL-3/4 bit.
When the A34 bit is "1," this VC is used for reception of the raw cell of the AAL-3/4
packet. The
μ
PD98405 checks the first two bits (ST field) of the cell's payload. The
μ
PD98405 issues an RCR interrupt only if the received cell contains "01" or "11" in its
ST field. An RCR interrupt will not occur in cell units. When this bit is set to "1," the
A/R bit must be reset to "0."
OD
OAM reception/discard.
When an RM or OAM F5 cell in its PTI field and pattern "1xx" arrives at this VC, the OD
bit is used to specify whether to accept it.
1: Ignores and discards OAM F5 or RM cells.
0: Accepts OAM F5 or RM cells.
If the use of the ABR service has been set for this VC (the ABR bit is set to "1"), RM
cells are processed as RM cells for ABR. The
μ
PD98405 will not store RM cells into a
pool.
A/R
AAL-5 reception/raw cell reception.
This bit specifies whether a cell arriving at this VC is to be processed as an AAL-5 or
raw cell.
1 - Received as an AAL-5 cell
0 - Received as a raw cell
RLI
Indication of receive LECID.
This bit specifies whether to indicate LECID reception by using a receive indication.
1 - Receive LECID reported using an indication
0 - Receive LECID not reported using an indication
When this function is enabled, the
μ
PD98405 stores a receive LECID into the
UINFO/LECID field of the VC table and indicates this in the UINFO/LECID field of the
indication; subsequently the UINFO/LECID field cannot be used for user information.
DAF
Enable destination address filtering.
This bit specifies whether to use the destination address filtering function.
1 - Enable
0 - Disable
When this function is enabled, the
μ
PD98405 executes destination address filtering for
LAN emulation by setting the MAU, MAL, HTU, and HTL register addresses.
LFE
Enable receive LECID filtering.
This bit specifies whether to use the receive LECID filtering function.
1 - Enable
0 - Disable
When this function is enabled, if a received packet has the same LECID as that set in
the LOCAL LECID field, all cells in the packet are discarded.