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12.3 NBD Function Protocol
The basic protocol of the NBD function is shown below.
(1) Basic protocol
(1) On a read
CLK_DBG
SYNC
AD0_DBG to
AD3_DBG
(2) On a write
CLK_DBG
SYNC
AD0_DBG to
AD3_DBG
Remark
N: Not ready
R: Ready
CHAPTER 12 NBD FUNCTION ( µ µ µ µ PD70F3116)
Figure 12-2. Basic Protocol
Control
Address section
section
Command packet
Control
Address section
Data section
section
Command packet
User's Manual U14492EJ3V0UD
N
N
R
Flag sense
Data packet
N
N
R
Flag sense
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