Denon DVD-757 - Manual (Page 5)

Ver 2.01
Date : Nov.29.2005 5 page of 46
Copyright 2005 DENON Co.,Ltd.
command has been normally executed.
4) The host shall give an answer to a command that gives operational instructions, then
issue a status request command, and decide whether this unit has finished operating with
regard to the command that gives operational instructions.
5) The time from the start of command transmission to the end of command transmission
should be max 40 msec.
6) The time from the completion of command transmission to the start of answer-back is
MAX.60 m 5 sec.
7) This unit cannot receive any commands for about 5 seconds after the power switch is
turnied on.
1.4.2 Communication errors
1) Having received a command, which results in a communication error ( overrun, framing,
or parity error ) , this unit shall give NAK ( 15h ) . ( MAX 80ms from the start of
command transmission )
2) If the host has received NAK from this unit, it shall retransmit the command that it has
transmitted immediately beforehand.
3) Having received an answer, which results in a communication error ( overrun, framing,
or parity error ) , the host shall respond with NAK.
4) If it has received NAK from the host, this unit shall retransmit the answer it has
transmitted immediately beforehand. ( MAX 40ms)
5) When there is no answer from the unit within 80 m 6 s, the host shall retransmit the
command.
NTIAL