User`s manual

Section 4 User Interface Circuit
The user system interface cable includes the H8S/2218 microcomputer to emulate the USB
function. The H8S/2218 user interface signal includes a interface circuit as shown in figure 10.
15
H8S/2218
0.1 µF
QS3384
5
0.1 µF
DrVcc
DrVss
D15 to D8
47 Ω 47 Ω
47 kΩ
47 kΩ
Vcc
Vcc
Vcc Vcc
D15/PD7
D8/PD0
P72/TMO0/CS6
to
D15/PD7
D8/PD0
to
Evaluation chip
E6000 emulator HS2214EPI62H
USD+
USD-
UBPM
VBUS
USPND
USD+
USD-
UBPM
VBUS
USPND
DrVcc
DrVss
HS2218ECN61H
8
User system
This is used
to control
the QS3384.
Figure 10 User Interface Signal