Table 1.18 Scsi Bus Data & Information Phase Dt Timing Values - Fujitsu MBA3073 SERIES Technical Manual

Table 1.18
Timing description
1 ATN transmit setup time
2 Flow control transmit hold time
3 Flow control transmit setup time
4 pCRC transmit hold time
5 pCRC transmit setup time
6 Transmit assertion period (11)
7 Transmit hold time (11)
8 Transmit ISI Compensation
9 Transmit negation period (11)
10 Transmit REQ(ACK) period tolerance
11 Transmit REQ assertion period with
P_CRCA transitioning
12 Transmit REQ negation period with
P_CRCA transitioning
13 Transmit setup time (11)
14 Transmitter skew
15 Transmitter time asymmetry
Fast-160 SCSI devices shall not change timing parameters between training or reset events.
Note: (6) Cable Skew is measured at each device connection with the transmitted skew subtracted from
the received skew. (7) See Fig.1-20 for measurement points for the timing specifications. (8) SCSI
bus timing values specified by the maximum transfer rate for the given range shall apply even if a
slower transfer rate within the given range is negotiated.
42
SCSI bus data & information phase DT timing values
Type
Min
Min
Min
Min
Min
Min
Min
Max
Min
Max
Min
Min
Min
Max
Max
Timing values [ns] (12)
Fast-10 Fast-20 Fast-40
48.4 29.2 19.6
38.4 19.2 9.6
48.4 29.2 19.6
38.4 19.2 9.6
48.4 29.2 19.6
92 46 23
38.4 19.2 9.6
N/A N/A N/A
92 46 23
0.6 0.6 0.6
97.5 54 35.5
97.5 54 35.5
38.4 19.2 9.6
N/A N/A N/A
N/A N/A N/A
Fast-80 Fast-160
14.8 14
4.8 1.4
14.8 1.4
4.8 N/A
14.8 N/A
11.5 5.69
4.8 4.77
N/A 1.0
11.5 5.69
0.6 0.06
24 N/A
24 N/A
4.8 -1.48
N/A ±0.75
N/A ±0.25
C141-C015