NEC EP-753304DU-R, Руководство пользователя

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13
CHAPTER 3 SETTING MASK OPTIONS
CHAPTER 3 SETTING PORT 3
The DP1 switch on the adapter board is for the port 3 setting. When these switches are ON, pull-up resistors
Note 1
(47 k
Ω
) or pull-down resistors
Note 2
(47 k
Ω
) are connected.
At shipping, the DP1 switches are set in the OFF position.
Notes 1. P33
2. P30 to P32
Caution Regarding port 3, the setting method for the adapter board and devices differs.
The pull-up resistor and the pull-down resistor are set by the DP1 switch.
Figure 3-1. DP1 Switch Arrangement Diagram
1
OFF
2 3 4
OFF
P3
1 4
SW • bit Signal Name
µ
PD759000
Pin Processing
100
Ω
47 k
Ω
USRVDD
Note
100
Ω
Emulation Probe
P30 to P32
P33
DP1
P30 to P32
P33
DP1 – 1
→
P30
– 2
→
P31
– 3
→
P32
– 4
→
P33
47 k
Ω
Note The same potential voltage of user V
DD
generated in IE.