stusbcd01b STMicroelectronics, stusbcd01b Datasheet - Page 12

• Manufacturer Part Number: stusbcd01b
• Description: Usb Charger Detection Interface
• Manufacturer: STMicroelectronics

7
Figure 4.
12/19
V
V
V
V
output, see Functional
output, see Functional
Diagram) must be high
Diagram) must be high
for >20ms for charger
for >20ms for charger
detection to be valid
detection to be valid
DETECT
DETECT
I
I
Applied to DM
Applied to DM
V
V
Applied to DP
Applied to DP
DM_SRC
DM_SRC
Either returned V
Either returned V
dedicated charger or applied
dedicated charger or applied
V
V
DAT_SINK
DAT_SINK
DAT_DET
DAT_DET
DAT_DET
DAT_DET
DAT_SRC
DAT_SRC
DAT_SRC
DAT_SRC
V
V
BUS
BUS
(comparator
(comparator
by HOST charger
by HOST charger
Timing diagrams
Current sink method (with charger connected)
DAT_SRC
DAT_SRC
if
if
T
T
VBUS_DBNC
VBUS_DBNC
5ms
5ms
150ms < T
150ms < T
V
V
V
V
BUS+
BUS+
BUS-
BUS-
T
T
5ms
5ms
D_VDAT
D_VDAT
VBUS_DET_CS
VBUS_DET_CS
T
T
<20ms
<20ms
DM_SRC_EN
DM_SRC_EN
T
T
T
T
CHGR_DET_DBNC
CHGR_DET_DBNC
>100ms
>100ms
DP_SRC_ON
DP_SRC_ON
>20ms
>20ms
< 270ms
< 270ms
<20ms
<20ms
T
T
50-100µA
50-100µA
0.615-0.7V
0.615-0.7V
>40ms
>40ms
DM_SRC_DIS
DM_SRC_DIS
T
T
DPSRC_HICRNT
DPSRC_HICRNT
T
T
VBUS_DBNC
VBUS_DBNC
5ms
5ms