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Host Interface
4-22
C156-E224-01EN
4.3.5 MODE SENSE command
Table 4.31 MODE SENSE command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (1Ah)
1
Reserved
DBD
Reserved
2
PC
Page Code
3
Reserved
4
Allocation Length
5
Reserved
The MODE SENSE command transfers a mode parameter list to INIT.
If Disable Block Descriptor (DBD) is 1, the command does not return a block
descriptor. If DBD is 0, the command returns a block descriptor.
Allocation Length specifies the number of bytes of the mode parameter to be
transferred. If Allocation Length is 0, the command ends normally without
transferring any data.
Page Control (PC) specifies the type of page to be sent.
Table 4.32 Page control field
Bit 7
Bit 6
Parameter type
0
0
Current value
0
1
Variable value
1
0
Default value
1
1
Saved value
Page Code specifies a mode page to be transferred. If Page Code is 3Fh, all mode
pages are transferred. Table 4.10, "Mode page codes" lists the mode pages that are
supported.
Mode pages are transferred in ascending order of page code.
If 0 is specified for both Page Code and Page Control, the command transfers
Mode Parameter Header and Block Descriptor (only if the DBD bit is 0).
Table 4.33 is a list of mode parameters.
Summary of Contents for MCJ3230SS
Page 1: ...C156 E224 01EN MCJ3230SS OPTICAL DISK DRIVE PRODUCT MANUAL ...
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Page 19: ...C156 E224 01EN xv Figure 6 1 Revision label 6 4 Figure 6 2 Revision number indication 6 4 ...
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Page 46: ...Specifications 2 12 C156 E224 01EN Figure 2 3 Example of alternate processing ...
Page 52: ...Installation Requirements 3 6 C156 E224 01EN Unit mm Figure 3 3 Dimensions without panel ...
Page 59: ...3 4 Cable Connections C156 E224 01EN 3 13 PC board Figure 3 11 Shape of setting terminal ...
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Page 124: ...Host Interface 4 50 C156 E224 01EN Figure 4 5 ARBITRATION phase ...
Page 125: ...4 5 Timing Rule C156 E224 01EN 4 51 µ Figure 4 6 SELECTION phase Figure 4 7 RESELECTION phase ...
Page 126: ...Host Interface 4 52 C156 E224 01EN Figure 4 8 Transfer in asynchronous mode ...
Page 127: ...4 5 Timing Rule C156 E224 01EN 4 53 Figure 4 9 Transfer in FAST SCSI mode ...
Page 128: ...Host Interface 4 54 C156 E224 01EN Figure 4 10 ATTENTION condition ...
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