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E2, IE850A
6.Internal Circuit of the E2 Emulator
The internal interface circuit related to the communications interface between the E2 emulator and user
system is shown in Figure 6-1. Please refer to the figure when determining parameters in board design.
Power-supply circuit
(only in the mode to
supply power)
3.3V
74LVC1T45
74LVC1T45
74LVC1T45
74LVC1T45
74LVC8T245
74LVC1T45
Emulator
control
circuit
74LVC1T45
74LVC8T245
74LVC8T245
74LVC1T45
74LVC1T45
Figure 6-1
R20UT4140EJ0300 Rev.3.00
Oct.09.20
1MΩ x6
Noise filter
47Ω
NFL21SP
47Ω
47Ω
Noise filter
47Ω
NFL21SP
47Ω
Noise filter
47Ω
NFL21SP
0.1μF
47Ω
47Ω
Interface Circuits in the E2 Emulator (4-Pin LPD, 2-Wire UART, CSI)
6. Internal Circuit of the E2 Emulator
100kΩ
3MΩ x2
3.3V
100ｋΩ
Self-recovering
fuse
20-pin connector
14-pin connector
1
8 TVDD
4
1
LPDCLK
3
TRST
16
5
LPDO
6
2
9
－
3
SW is on 1 side
12
11 LPDCLKO
18
4
FPMD0
8
7 LPDI/FPDR
20
10 EVTO
9
14 GND
10
13 RESET
3,5,15,
2,12 GND
17,19
1MΩ
6
14
－
Page 37 of 41
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