MPC8536-RDK Freescale Semiconductor, MPC8536-RDK Datasheet - Page 1259

• Manufacturer Part Number: MPC8536-RDK
• Description: BOARD REF COMEXPRESS MPC8536
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536-RDK

• Contents: CSB1880, CSB1801, Cables, Documentation, Enclosure, Power Supply with cord
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 19-26
19.3.6
Each entry in the command header table consists of the structure shown in
Freescale Semiconductor
10–28
0–15
Bits
16
17
18
19
29
Command Header
describes the SYSPR fields.
PRI_DATA
RD_SAFE
PRI_DES
In this chapter, “word” refers to 4 bytes or 32 bits.
Name
—
—
—
—
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
Reserved
Data high priority enable.
0 Normal operation. SATA data transfers have default (low) priority.
1 High priority enabled for SATA data transfers.
Reserved
Descriptor fetch high priority enable.
0 Normal operation. SATA descriptor fetches have default (low) priority.
1 High priority enabled for SATA descriptor fetches.
Reserved
Reserved
Read safe. This bit should be set only if the target of the read DMA operation is a well
behaved memory that is not affected by the read operation and which will return the same
data if read again from the same location. This means that unaligned reading operation can
be rounded up to enable more efficient read operations.
0 It is not safe to read more bytes that were intended.
1 It is safe to read more bytes that were intended.
31
R
R
R
Table 19-26. SYSPR Field Descriptions
Command Descriptor Address (CDA)
Command Descriptor Address (CDA)
Command Descriptor Address (CDA)
Reserved
Reserved
Reserved
Figure 19-27. Command Header
Total Transfer Length (TTL)
Total Transfer Length (TTL)
Total Transfer Length (TTL)
PRD_ENTRY
PRD_ENTRY
PRD_ENTRY
23
NOTE
V
V C Q R B A
V C Q R B A
•
•
•
15
C
R
R
R
Q R B A
Description
FIS_LEN
FIS_LEN
FIS_LEN
7
TAG
TAG
TAG
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0
Figure
Word 0
Word 1
Word 2
Word 3
•
•
•
19-27.
SATA Controller
19-29