mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1004

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

Functional Description
Timing parameter values used in this module are listed in the following table.
1. This parameter is defined by the USB Battery Charging Specification, v1.1.
40.5.1.1 Initial System Conditions
Before starting the USBDCD module's charger detection sequence, the system must be:
1004
T
1
2
3
4
5
6
T
CON_IDPSINK_DIS
T
T
T
CHECK_DM
• using a rechargable battery,
• for a FS USB device application (cannot be HS, LS, host, or OTG),
• powered-up and in run mode,
T
VDPSRC_CON
T
Parameter
VDMSRC_DIS
VDPSRC_ON
VDMSRC_EN
DCD_DBNC
T
UNIT_CON
SEQ_INIT
Initial Conditions
VBUS Detection
Data Pin Contact
Detection
Charging Port
Detection
Charger Type
Detection
Sequence
Timeout
1
Phase
1
Table 40-15. Timing Parameters for the Charger Detection Sequence
1
1
1
1
1
10 ms min (no max)
40 ms min (no max)
40 ms min (no max)
N/A
N/A
1 s
1 - 20 ms
0 - 20 ms
0 - 20 ms
USB Battery Charging Spec Module Default
Table 40-14. Overview of the Charger Detection Sequence
Initial system conditions that need to be met before initiating the detection
sequence
System software detects contact of the VBUS signal with the system interrupt
pin VBUS_detect.
The USBDCD module detects that the USB data pins D+ and D– have made
contact with the USB port.
The USBDCD module detects if the port is a standard host or either type of
charging port (charging host or dedicated charger).
If attached to a charging port, detect which type.
The USBDCD module did not finish the detection sequence within the timeout
interval. The sequence will continue until halted by software.
Overview Description
MCF51JF128 Reference Manual, Rev. 2, 03/2011
10 ms
40 ms
40 ms
1 ms
16 ms
N/A
From the USB host
From the USB host
From the USB host
Preliminary
0 - 1023 ms
0 - 1023 ms
0 - 1023 ms
0 - 15 ms
0 - 1023 ms
N/A
N/A
N/A
N/A
Module Programmable Range
Freescale Semiconductor, Inc.
Initial System
Conditions
VBUS Contact
Detection
Data Pin Contact
Detection
Charging Port
Detection
Charger Type
Detection
Charger
Detection
Sequence
Timeout
Full Description