![](http://datasheet.mmic.net.cn/380000/-PD98405_datasheet_16745025/-PD98405_307.png)
CHAPTER 7 REGISTERS
307
(19) RCC (Receive cell counter)
Address:
24H
Access mode: Read only
RCC is a counter that is used to store the number of cells received by the ATM layer. Unassigned/idle
cells, as well as cells having an invalid VPI/VCI value, are not counted. When the host performs a read
operation, the value of the counter is cleared to 0. If the counter should overflow, the host is notified by
the issue of an interrupt, after which counting starts again from 0. After a reset, the counter is initialized to
0.
31
0
COUNT
(20) TCC (transmit cell counter)
Address:
25H
Access mode: Read only
TCC is a counter that is used to store the number of cells transmitted from the ATM layer.
Unassigned/idle cells are not counted. When the host performs a read operation, the value of the counter
is cleared to 0. If the counter should overflow, the host is notified by the issue of an interrupt, after which
counting starts again from 0. After a reset, the counter is initialized to 0.
31
0
COUNT
(21) RUEC (invalid VPI/VCI receive cell error counter)
Address:
26H
Access mode: Read only
RUEC is a counter that is used to store the number of received cells that have been internally discarded
as a result of their having an invalid VPI/VCI value. When the host performs a read operation, the value of
the counter is cleared to 0. If the counter should overflow, the host is notified by the issue of an interrupt,
after which counting starts again from 0. After a reset, the counter is initialized to 0.
31
0
COUNT