Mode - NEC µPD72257 Preliminary User's Manual

Graphics controllers
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Chapter 5
5.2.3.1
Byte
Bit
15
14
Content
Parameters
Figure 5-3
126
eeShortOffs command
This command sets the upper 12 address bits of the address in short addressing

mode.

SHADDOFF[11:0] are used as ADD[23:12] during a eeShort access.
2nd byte
13
12
11
10
SHADDOFF[11:4]
bit[15:4] = SHADDOFF[11:0]: upper 12 bit of a short address
eeShortOffs byte1
eeShortOffs command flow
Preliminary User's Manual S19203EE1V3UM00
9
8
7
6
5
SHADDOFF[3:0]
eeShortOffs byte2
Host CPU Interface
1st byte
4
3
2
1
0
1
1
0
0
command
transfer

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