SLAVE will respond prior to the counter reaching 2^8 (~5ms) else it holds off until
the next ... detection of the SLAVE's training pattern and if the transition count is.
Comments on Draft 2.1 IEEE P803.2an Task Force San Francisco, July ’05 Brett McClellan
B. McClellan
SolarFlare Communications
1
PBO/THP Increase Transition • 55.4.5.1 page 112 line 16 – "transition_count" lacks a description of the transition for PBOTHP_increase. – Suggested text: • In the PMA_Training_Init_M state, the MASTER initiates the transition count for a PBO/THP increase with "PBOTHP_increase" flag and a minimum counter value of 2^9 (~10ms) and maximum of 2^12 - 1. The SLAVE will respond prior to the counter reaching 2^8 (~5ms) else it holds off until the next PBO/THP setting from the master. Upon detection of the SLAVE's training pattern and if the transition count is greater than 2^6 (~1ms) the MASTER will abort the transition, reset the PBOTHP_increase flag and set the Next transmitter setting octet to the current PBO and THP settings.
– change: • The MASTER initiates the transition count with "trans_to_Training_Update" flag and a minimum counter value of 2^9 (10ms) and maximum of 2^12 - 1. • to: The MASTER initiates the transition to PMA_Training_Update count with the "trans_to_Training_Update" flag and a minimum counter value of 2^9 (10ms) and maximum of 2^12 - 1. B. McClellan
SolarFlare Communications
2
Long Line Case • SLAVE responds to PBO3 from MASTER t=0
start maxwait_timer
t=168± 5 ms maxinc_timer 168±5 ms
MASTER TX
t=268± 10 ms
RX Training Pattern Detect
maxinc_timer 100±5 ms
master EQ training
Training Pattern: PBO1 / THP 1 (or THP bypass)
Training Pattern: PBO2 / THP 2 (or THP bypass)
Training Pattern: PBO3 / THP 3 (or THP bypass)
IFM {Next = PB02 / THP 2 (or bypass) }
IFM {Next = PB03 / THP3 (or bypass) }
IFM {... }
IFM {slave_holdoff}
IFM {transition count}
IFM {transition count}
IFM {slave_holdoff} variable by +/- 68ms slave may begin response
>10ms transition counter starts
10ms transition counter starts
1ms abort PBO/ THP increase transition
variable by +/- 68ms
>10ms transition counter starts
slave may begin response
>5ms
SLAVE TX
Training Pattern: PBO1 / THP1 (or THP bypass) start maxwait_timer
B. McClellan
IFS {... } slave EQ training RX Training Pattern Detect
