PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
Register 0x20E: Group Timeout Register # 1
Bit
Type
Function
Default
15:12
11:8
7:4
R/W
R/W
R/W
R/W
Group_startup_ack_timeout
Group_config_abort_timeout
RX_usable_timeout
0x4
0x4
0x4
0x4
3:0
RX_active_timeout
This register holds the time-out values used at different states of the group state
machine or the group-wide procedures (such as group start-up and LASR). The
actual time represented by the timeout value in this register can be obtained as:
Real_time = Timeout_value * Internal_timer_tick_interval
Group_config_abort_timeout:
The timeout value determines how long the GSM should stay in
Config_Aborted state before it can move back to Start-up state, if no new
parameters are proposed by the FE and PM does not issue a restart_group
command.
Group_startup_ack_timeout:
The timeout value determines how long the GSM should stay in Start-up-Ack
state before it can move back to Start-up state, if the FE GSM is not in one of
the following states: Start-up-Ack, Insufficient-Links, Blocked, or Operational.
RX_usable_timeout:
During the group start-up or LASR, this timeout value determines how long
the RIPP should wait before it can move any RX LSMs to Usable state
(unless all the RX links involved are out of defect status). In the case of group
start-up, the timer is started when the GSM enters Insufficient-links state;
during LASR, it is started when the PM issues add_link command.
RX_active_timeout:
During the group start-up or LASR, this timeout value determines how long
the RIPP should wait before it can move any RX LSMs to Active state (unless
all the links involved are being reported TX = Usable by the FE). The timer is
started after the RX = usable synchronization point.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
186
PMC [ PMC-SIERRA, INC ]
