Fujitsu MAP3367, MAP3147, MAS3735, MAP3735, MAS3367 Write Buffer command buffer data Mode = 000

3.4 Maintenance, Diagnostic Commands

“Mode Bit”	3	2	1	0	Transfer Mode
	0	0	0	0	Header + Data, without Address Specification
	0	0	0	1	Header + Data, with Address Specification
	0	0	1	0	Data Only, with Address Specification
	0	1	0	0	Microcode Download, without Saving
	0	1	0	1	Microcode Download, with Saving
	0	1	1	0	Microcode Download with offset, without Saving
	0	1	1	1	Microcode Download with offset, and Saving
	1	0	1	0	Echo buffer

(1)Mode = 0, 0, 0, 0: Header + data, without address specification

In this mode, a 4-byte header (with all zero’s specified for the contents) must be added to the top of the data transferred from the INIT. Also, zero must be specified in the “Buffer address” field of the CDB.

The “Transfer byte length” field specifies the total number of bytes of data transferred form the INIT. The transfer byte count specification includes the 4 bytes of the header. The IDD stores the data transferred from the INIT with the header omitted (“Transfer byte length” – 4 bytes) in the data buffer beginning in order from the top of the data buffer (Address: X ‘000000’).

Furthermore, a value which is less than the [IDD’s buffer size + 4 bytes] must be specified in the “Transfer byte length” field in the CDB. When a value that is larger than this is specified, no data transfer with the INIT is executed. Also, when zero is specified in the “Transfer byte length” field, this command is terminated without data being transferred.

Figure 3.24 shows the format of data transferred from the INIT when this mode is specified.

Header

Data

		Bit		7	6	5		4	3	2	1	0
	Byte
	0			0	0	0	0		0	0	0	0
	1			0	0	0	0		0	0	0	0
	2			0	0	0	0		0	0	0	0
	3			0	0	0	0		0	0	0	0
	4						Buffer Data (Byte 0)
	5						Buffer Data (Byte 1)
~			~										~
~			~										~

n

Buffer Data (Byte n–4)

Figure 3.24 WRITE BUFFER command: buffer data (Mode = 000, 001)

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