Nbd Function Protocol - NEC UPD703116 User Manual

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 (
Figure 12-2. Basic Protocol
Control
Address section
section
Command packet
Control
Address section Data section
section
Command packet
User's Manual U14492EJ5V0UD
µ
PD70F3116)
N N R
Flag sense
N N R
Flag sense
Data packet
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