7
Section 3 User System Interface
Switches, protection circuits, and termination circuits are provided for the H8S/2160B LPC
interface of the expansion I/O board. Signals are connected to the user system interface cable with
the protection circuit. Figure 3.1 and Figure 3.2 shows user interface circuit.
E6000 (HS2140EPI61H)
H8S/2140B
Evaluation chip
HS2160EIO61H
H8S/2160B
User system
interface cable
Protection circuits: R
C
, D
1
, and D
2
Termination circuits: R
A
and R
B
3
1
3.3 V
R
A
R
C
D
1
D
2
R
B
Figure 3.1 User System Interface Circuit
E6000 (HS2140EPI61H)
H8S/2140B
HS2160EIO61H
H8S/2160B
User system
interface cable
Evaluation chip
Figure 3.2 User System Interface Circuit (Port E,F,G)
Table 3.1 shows switches and circuit description.
