IDT 89HPES16NT2, Руководство пользователя

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IDT SMBus Interfaces
PES16NT2 User Manual 6 - 6 April 15, 2008
Notes
Figure 6.2 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 6.3. 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 6.3 Sequential Double Word Initialization Sequence Format
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]
... ...