21
1 kΩ
47 kΩ
Vcc
MD_CLK
PM0-PM4
VBUS
DrVcc
USD-
USD+
DrVss
LPT16244
Monitoring circuit
MD_CLK
PM0-PM4
VBUS
DrVcc
USD-
USD
DrVss

Sub-MCU

47 kΩ
Vcc
User system
EPM3256ATC
MD3
Figure 15 User System Interface Circuit (4)