IDT SMBus Interfaces
Master SMBus Interface
PES12N3 User Manual
7 - 6
June 7, 2006
Notes
Figure 7.2 Single Double Word Initialization Sequence Format
The second type of configuration block is the sequential double word initialization sequence. It is similar
to a single double word initialization sequence except that it contains a double word count that allows
multiple sequential double words to be initialized in one configuration block.
A sequential double word initialization sequence consists of four required fields and one to 65535
double word initialization data fields. The format of a sequential double word initialization sequence is
shown in Figure 7.3. The CSR_SYSADDR field contains the starting double word CSR system address to
be initialized. The next field is the TYPE field that indicates the type of the configuration block. For sequen-
tial double word initialization sequences, this value is always 0x1. The NUMDW field specifies the number
of double words initialized by the configuration block. This is followed by the number of DATA fields speci-
fied in the NUMDW field.
Figure 7.3 Sequential Double Word Initialization Sequence Format
The final type of configuration block is the configuration done sequence which is used to signify the end
of a serial EEPROM initialization sequence.
Bit
0
Bit
1
Bit
2
Bit
3
Bit
4
Bit
5
Bit
6
Bit
7
Byte 0
CSR_SYSADDR[7:0]
CSR_SYSADDR[13:8]
TYPE
0x0
Byte 1
Byte 2
DATA[7:0]
Byte 3
DATA[15:8]
Byte 4
DATA[23:16]
Byte 5
DATA[31:24]
Bit
0
Bit
1
Bit
2
Bit
3
Bit
4
Bit
5
Bit
6
Bit
7
Byte 0
CSR_SYSADDR[7:0]
CSR_SYSADDR[13:8]
TYPE
0x1
Byte 1
Byte 2
NUMDW[7:0]
Byte 3
NUMDW[15:8]
Byte 4
DATA0[7:0]
Byte 5
DATA0[15:8]
Byte 6
DATA0[23:16]
Byte 7
DATA0[31:24]
Byte 4n+4
DATAn[7:0]
Byte 4n+ 5
DATAn[15:8]
Byte 4n+6
DATAn[23:16]
Byte 4n+7
DATAn[31:24]
...
...
Summary of Contents for 89HPES12N3
Page 10: ...IDT Table of Contents PES12N3 User Manual iv June 7 2006 Notes...
Page 14: ...IDT List of Figures PES12N3 User Manual viii June 7 2006 Notes...
Page 36: ...IDT Clocking Reset and Initialization Reset PES12N3 User Manual 2 8 June 7 2006 Notes...
Page 40: ...IDT Link Operation Slot Power Limit Support PES12N3 User Manual 3 4 June 7 2006 Notes...
Page 50: ...IDT Switch Operation Switch Core Errors PES12N3 User Manual 4 10 June 7 2006 Notes...
Page 54: ...IDT Power Management Active State Power Management PES12N3 User Manual 5 4 June 7 2006 Notes...
Page 62: ...IDT Hot Plug and Hot Swap Hot Swap PES12N3 User Manual 6 8 June 7 2006 Notes...
Page 78: ...IDT SMBus Interfaces Slave SMBus Interface PES12N3 User Manual 7 16 June 7 2006 Notes...
Page 148: ...IDT Test and Debug SerDes Test Clock PES12N3 User Manual 10 6 June 7 2006...
Page 158: ...IDT JTAG Boundary Scan Usage Considerations PES12N3 User Manual 11 10 June 7 2006 Notes...
