C141-C011
1-77
3)
keep the P1, P_CRCA, DB(15-0), and REQ signals negated for the equivalent of 8
additional transfer periods;
4)
simultaneously assert and negate P1, P_CRCA, 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 REQ at the negotiated transfer period 24 times (e.g.,
(2 x 6,25 ns) x 24 = 300 ns at fast-160);
Start of section C:
5)
assert and negate REQ 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 P_CRCA and DB(15-0)
signals (e.g., (2 x 6,25 ns) x 64 = 800 ns at fast-160); and
The INIT shall begin its training pattern independent of the start of the TARGs training pattern if it
detects the SEL, MSG, and I/O true and C/D false on the first assertion of the REQ signal. The
INIT shall transmit the following training pattern:
1)
assert ACK signal within 200 ns of the first REQ assertion;
2)
if precompensation is enabled then set the drivers to the strong driver state;
3)
wait the equivalent of 32 transfer periods (e.g., 200 ns at fast-160);
4)
negate ACK signal;
5)
wait the equivalent of 32 transfer periods (e.g., 200 ns at fast-160);
6)
set precompensation to negotiated state; and
7)
assert and negate ACK signal at the negotiated transfer period 32 times, (e.g., (2 x 6,25) x
32 = 400 ns at fast-160).
At the completion of its training pattern the TARG continues asserting and negating the REQ
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 TARG
is ready to transfer data it shall reverse the phase of P1.
Содержание MAW3073 SERIES
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Страница 27: ...C141 C011 1 9 M M 0 61 5 16 0 001 0 396 Figure 1 5 SCSI interface connector cable side 16 bit SCSI ...
Страница 61: ...C141 C011 1 43 2 SE Fast 20 Figure 1 21 is the Fast 20 measurement point Figure 1 21 Fast 20 Measurement Point ...
Страница 69: ...C141 C011 1 51 Figure 1 26 ARBITRATION phase ...
Страница 116: ...1 98 C141 C011 Figure 1 43 Bus phase sequence 1 of 2 ...
Страница 117: ...C141 C011 1 99 Figure 1 43 Bus phase sequence 2 of 2 ...
Страница 118: ...1 100 C141 C011 Figure 1 44 Example of bus phase transition at execution of a single command 1 of 5 ...
Страница 119: ...C141 C011 1 101 Figure 1 44 Example of bus phase transition at execution of a single command 2 of 5 ...
Страница 120: ...1 102 C141 C011 RESELECTION Figure 1 44 Example of bus phase transition at execution of a single command 3 of 5 ...
Страница 121: ...C141 C011 1 103 Figure 1 44 Example of bus phase transition at execution of a single command 4 of 5 ...
Страница 122: ...1 104 C141 C011 Figure 1 44 Example of bus phase transition at execution of a single command 5 of 5 TASK COMPLETE ...
Страница 127: ...C141 C011 1 109 Figure 1 47 SPI information unit sequence during initial connection ...
Страница 128: ...1 110 C141 C011 Figure 1 48 SPI information unit sequence during data type transfers ...
Страница 129: ...C141 C011 1 111 Figure 1 49 SPI information unit sequence during data stream type transfers ...
Страница 130: ...1 112 C141 C011 Figure 1 50 SPI information unit sequence during status transfers ...
Страница 154: ...1 136 C141 C011 Figure 1 56 Connection to the LVD receivers ...
Страница 160: ...2 2 C141 C011 Figure 2 1 Message format ...
Страница 165: ...C141 C011 2 7 Figure 2 2 SCSI pointer configuration ...
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