38K2 Datasheet, PDF (59/151 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

38K2 Group
USB Down-port Peripheral Circuit Setting
The USB down-port peripheral circuits can be set with the down-
stream port control register (address 0FF916). Figures 89 and 90
show the circuit block diagrams.
PCON11
PCON10
PCON11
PCON10
Low
Speed
Full
Speed
PCON11
PCON10
HUB Module
+
-
PCON11
PCON11
PCON10
PCON11
PCON10
PCON11
PCON10
Full
Speed
Low
Speed
Fig. 89 Block diagram of USB down-port peripheral circuits (D1+, D1-)
PCON21
PCON20
PCON21
PCON20
Low
Speed
Full
Speed
PCON21
PCON20
HUB Module
+
-
PCON21
PCON21
PCON20
PCON21
PCON20
PCON21
PCON20
Full
Speed
Low
Speed
Fig. 90 Block diagram of USB down-port peripheral circuits (D2+, D2-)
Rev.3.00 Oct 15, 2006 page 59 of 147
REJ03B0193-0300
D1+
27 Ω
15 kΩ
D1-
27 Ω
15 kΩ
D2+
27 Ω
15 kΩ
D2-
27 Ω
15 kΩ