1.9.3.2 Spi L_Q Information Unit; Table 1.25 Spi L_Q Information Unit - Fujitsu MBA3073 SERIES Technical Manual

1.9.3.2 SPI L_Q information unit

The SPI L_Q information unit (see table 1.25) contains L_Q nexus information for the
information unit that follows, the type of information unit that follows, and the length of
information unit that follows. A SPI L_Q information unit shall precede all SPI command
information units, SPI multiple command information units, SPI data information units, SPI status
information units, and the first of an uninterrupted sequence of SPI data stream information units.
The receipt of an error free (i.e., no iuCRC error) SPI L_Q information unit by an INIT shall
cause the INIT to restore the data pointers.
Bit
7
Byte
0
1
2 (MSB)
3
4 (MSB)
11
12
13 (MSB)
14
15
DIDI DIRECTION
16
17
18 (MSB)
19
20 (MSB)
21
22
23
The TYPE field is defined in table 1.26. If a INIT receives a type code that is not defined in table
1.26 that INIT shall follow the procedures defined in 1.6.5.3 (6) (a). If a TARG receives a type
code that is not defined in table1.26 that TARG follows the procedures defined in 1.6.5.3 (6) (b).
1-55
Table 1.25 SPI L_Q information unit
6 5 4
LOGICAL UNIT NUMBER
DATA LENGTH
IUCRC INTERVAL
3 2
TYPE
Reserved
TAG
Reserved
Reserved
Reserved
IUCRC
1 0
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
C141-C007