5.3 Host Commands
(23) READ BUFFER (X’E4’)
The host system can read the current contents of the data buffer of the device by
issuing this command.
Upon receipt of this command, the device transfers the PIO Setup. After that, the
host system can read up to 512 bytes of data from the buffer.
• Error reporting conditions
(1) A SATA communication error occurred (ST = 51h, ER = 0Ch).
At command issuance (Shadow Block Registers setting contents)
CM 1 1 0 1 0 1 0 0
DH x x x x xx
CH
CL
SN
SC
FR
xx
xx
xx
xx
xx
At command completion (Shadow Block Registers contents to be read)
ST Status information
DH x x xx x x
CH
CL
SN
xx
xx
SC
ER
xx
xx
Error information
C141-E254 5-101
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