Fujitsu MBA3073 SERIES Technical Manual page 98

The INIT shall begin the section A of its training pattern independent of the start of the TARGs
training pattern if it detects the SEL and MSG true, and C/D and I/O false on the first assertion of
the REQ signal. The INIT shall transmit the following training pattern:
Start of section A:
1) if precompensation is enabled then set the drivers to the strong driver state;
2) simultaneously assert ACK, P1, and DB(15-0) signals within the equivalent of 32
transfer periods of the first REQ assertion (e.g., 200 ns at fast-160);
3) wait the equivalent of 32 transfer periods (e.g., 200 ns at fast-160);
4) simultaneously negate ACK, P1, and DB(15-0) signals;
5) wait the equivalent of 32 transfer periods;
6) set precompensation to negotiated state;
7) simultaneously assert and negate ACK, P1, and DB(15-0) signals at the negotiated
transfer period 64 times, (e.g., (2 x 6,25) x 64 = 800 ns at fast-160);
Start of section B:
1) wait the equivalent of 192 transfer periods from the first assertion of ACK in step 2 of
section A (e.g., 1200 ns at fast-160);
2) keep the P1, and DB(15-0) signals negated while continuing to assert and negate ACK at
the negotiated transfer period for the equivalent of 8 transfer periods (e.g., 50 ns at fast-
160);
3) keep the P1, DB(15-0), and ACK signals negated for the equivalent of 8 additional
transfer periods;
4) simultaneously assert and negate P1 and DB(15-0) signals at twice the negotiated transfer
period (i.e., simultaneously repeat a 1100b bit pattern 12 times on each signal) while
asserting and negating ACK at the negotiated transfer period 24 times (e.g., (2 x 6,25 ns)
x 24 = 300 ns at fast-160); and
Start of section C:
5) assert and negate ACK at the negotiated transfer period 64 times and at the same time
assert and negate P1 at twice the negotiated transfer period while repeating a
0000010011111011b bit pattern eight times on each of the DB(15-0) signals (e.g., (2 x
6,25 ns) x 64 = 800 ns at fast-160).
At the completion of its training pattern the INIT continues asserting and negating the ACK signal
at the negotiated transfer period (e.g., 6,25 ns transfer period at fast-160) and the P1 signal at
twice the negotiated transfer period (e.g., 12,5 ns transfer period at fast-160). When the INIT is
ready to transfer data and the REQ/ACK offset value is not zero it shall reverse the phase of P1.
18 C141-C015