Fujitsu F2MC-16LX Hardware Manual page 366

CHAPTER 14 USB Mini-HOST
Figure 14.5-12 Resume Operation by Device (Full Speed Mode)
(2) The simple host pins D+ and D- are detected to be K State.
Pin D+
for Mini-HOST
Pin D-
for Mini-HOST
RWIRQ bit of HIRQ
(RWKIRE="1")
: Power output from USB Mini-HOST
: Power output from device
: Drive by resistances of pull-up and pull-down
∗: This value is not guaranteed.
(3) The device is detected being cut.
Pin D+
for Mini-HOST
Pin D-
for Mini-HOST
RWKIRQ bit of HIRQ
(RWKIRE="1")
HIRQ bit1
(DIRE="1")
CSTAT bit of HSTATE
: Drive by resistances of pull-up and pull-down
350
Discovers that Mini-HOST pin D + and Mini-HOST pin D - become K State.
Figure 14.5-13 Resume Operation by Device Cutoff
The device is detected being cut.
Cutting
20µs ∗
2.5µs or more
1.33µs ∗
1 bit time
Interrupt
occurs