mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 964

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

Memory Map/Register Definitions
39.4.7 OTG Status Register (USBx_OTGSTAT)
The OTG Status Register displays the actual value from the external comparator outputs
of the ID pin and VBUS.
Addresses: USB0_OTGSTAT is FFFF_9000h base + 18h offset = FFFF_9018h
964
LINESTATESTABLE
ONEMSECEN
BSESSEND
AVBUSVLD
SESS_VLD
Reserved
Reserved
Reset
Read
Write
Field
ID
7
6
5
4
3
2
1
0
Bit
ID
7
0
Indicates the current state of the ID pin on the USB connector
0
1
This bit is reserved for the 1msec count, but it is not useful to software.
This bit indicates that the internal signals that control the LINE_STATE_CHG bit (bit 5) of the
OTGISTAT register have been stable for at least 1 millisecond. First read the LINE_STATE_CHG bit,
and then read this bit. If this bit reads as 1, then the value of LINE_STATE_CHG can be considered
stable.
0
1
This read-only bit is reserved and always has the value zero.
Session valid
0
1
B Session END
0
1
This read-only bit is reserved and always has the value zero.
A VBUS Valid
0
1
Indicates a Type A cable has been plugged into the USB connector
Indicates no cable is attached or a Type B cable has been plugged into the USB connector
The LINE_STAT_CHG bit is not yet stable.
The LINE_STAT_CHG bit has been debounced and is stable.
The VBUS voltage is below the B session Valid threshold
The VBUS voltage is above the B session Valid threshold.
The VBUS voltage is above the B session End threshold.
The VBUS voltage is below the B session End threshold.
The VBUS voltage is below the A VBUS Valid threshold.
The VBUS voltage is above the A VBUS Valid threshold.
0
6
MCF51JF128 Reference Manual, Rev. 2, 03/2011
USBx_OTGSTAT field descriptions
0
5
Preliminary
0
0
4
Description
SESS_VLD BSESSEND
0
3
0
2
Freescale Semiconductor, Inc.
0
0
1
AVBUSVLD
0
0