mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 207

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908LD64
Freescale Semiconductor
—
Rev. 3.0
PCHG5–PCHG0 — Hub and Port Status Change Bitmap
is no status change to be reported to the host through endpoint 1. If
this bit is 0, a NAK handshake will be returned for next IN token for
hub endpoint 1. Reset clears this bit.
These read/write bits report the status change for the hub, embedded
device and the four downstream ports. The status change bitmap is
returned to the host through the hub endpoint 1 if the PNEW bit is 1.
These bits are cleared by reset.
Bit Name
PCHG0
PCHG1
PCHG2
PCHG3
PCHG4
PCHG5
1 = Port status change bitmap is ready to be sent
0 = Port status does not change; respond with NAK
Universal Serial Bus Module (USB)
Port 1 status change
Port 2 status change
Port 3 status change
Port 4 status change
Hub status change
Embedded device
status change
Function
Value
0
1
0
1
0
1
0
1
0
1
0
1
Universal Serial Bus Module (USB)
No status change in hub
Hub status change detected
No status change in Port 1
Port 1 status change detected
No status change in Port 2
Port 2 status change detected
No status change in Port 3
Port 3 status change detected
No status change in Port 4
Port 4 status change detected
No status change in
embedded device
Embedded device status
change detected
Hub Function I/O Registers
Description
Data Sheet
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