scsi interface specification - Plasmon

DRIVE COMMAND SET MODE SENSE (1AH)Number of BlocksThe Number of Blocks field value is zero for the LaserDrive. This specifies that the block lengthspecification that follows applies to the entire media.Block LengthThe Block Length field specifies the length in bytes of each logical block of the LaserDrive logical unit. TheBlock Length returned is 400H (1024) bytes.Blocks of parameters called pages follow the block descriptor. Each page is preceded by a header of 2bytes defining the Page Code and the length of the parameters that follow.The PS bit indicates the page can be saved to nonvolatile RAM. Following the header, pages consist of anumber of fields of related flags and/or values. The PS bit in the first byte of each page indicates that thepage can be saved to nonvolatile RAM, if set. Savable pages are optional and identified by the PS bit thatis returned in the page header by the MODE SENSE command. The Parameter Length indicates thenumber of bytes that the LaserDrive supports in each Page. The Parameter Length value does not includethe 2-byte header. The LaserDrive returns, in the pages of the MODE SENSE commands, the entire pageas defined in this document.Valid Page codes are described in the next section.MODE SENSE PAGESThe following pages can be returned for a MODE SENSE command as specified by the PF bit and PageControl (PC) field.READ-WRITE ERROR RECOVERY PAGEThe Read-Write Error Recovery page specifies the error recovery parameters the Target uses during anycommand that performs a Read or Write operation to the media.Read-Write Error Recovery PageBITBYTE7 6 5 4 3 2 1 000 PS (1) Reserved Page Code (01H)01 Parameter Length (2)02 AWRE (1) Reserved EER (1) PER DTE Reserved03 Read Retry Count (Default 16)PSThe PS bit is set to indicate this page can be saved. The default value for byte 2 is 88H.Read Retry CountThe Read Retry Count field will always return 16.Refer to MODE SELECT, Read-Write Error Recovery Page section for the selectable field definitions.PLASMON L M S - LD 6100/LF 6600/LF 6602 SCSI INTERFACE SPECIFICATIONPage 78