mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1003

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

The following table provides an overview description of the charger detection sequence
shown in the preceding figure.
Freescale Semiconductor, Inc.
Detection
Host Port
Charging
Portable
Charger
Device
Speed
Phase
Full-
USB
D P _ P U L L U P
V B U S a t p o rta b le
U S B d e v ice
I
R
DEV_HCHG_LFS
V
I
V
I
I
DM_DWN
DP_SRC
DM_SINK
DP_SINK
D+
DM_SRC
DP_SRC
I
D-
DEV_DCHG
lgc_hi
lgc_lo
lgc_hi
lgc_lo
I
0 m A
SUSP
o ff
on
o ff
on
on
o ff
on
o ff
o ff
on
Figure 40-9. Full Speed Charger Detection Timing
Conditions
Initial
1
MCF51JF128 Reference Manual, Rev. 2, 03/2011
VBUS
Detect
2
T
Detection
T
Data Pin
T
Contact
VDMSRC_EN
SEQ_INIT
UNIT_CON_ELAPSED
3
Preliminary
C h a rg in g h o s t: V
T
DCD_DBNC
T
Chapter 40 USB Device Charger Detection Module (USBDCD)
VDPSRC_ON
1 m s
= T
SE Q_INIT
Charging Port
Detection
T
VDMSRC_DIS
DAT_REF
4
Standard host: V
D e d ic a te d C h a rg e r
C h a rg in g H o s t
T
< V
VDPSRC_CON
D-
< V
D -
V
c a u s e D + v o lta g e to e x c e e d V
a t c h a rg in g h o s t p o rt.
DM_SRC
LGC
< V
DAT REF
could turn on if ground currents
Detection
C H E C K _ D M
Charger
Type
Dedicated Charging Port
C h a rg in g H o s t P o rt, F S
5
T
CON_IDPSNK_DIS
T
UNIT_CON_ELAPSED
Dedicated Charger
C h a rg in g H o s t
DAT_REF
Timeout
6
= 1 s
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