XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 131
XC68HC08KH12
Manufacturer Part Number
XC68HC08KH12
Description
MICROCONTROLLER
Manufacturer
Motorola
Datasheet
1.XC68HC08KH12.pdf
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9.4.8 USB HUB Endpoint1 Control & Data Register (HCDR)
MC68HC(7)08KH12
MOTOROLA
—
Rev. 1.0
Address:
TPSIZ3-TPSIZ0 — HUB Endpoint 0 Transmit Data Packet Size
STALL1 — HUB Endpoint 1 Force Stall Bit
PNEW — Port New Status Change
Reset:
Read:
Write:
These read/write bits store the number of transmit data bytes for the
next IN token request for HUB Endpoint 0. These bits are cleared by
reset.
This read/write bit causes HUB Endpoint 1 to return a STALL
handshake when polled by the host. Reset clears this bit.
This read/write bit enables a transmit to occur when the USB Host
controller sends an IN token to HUB Endpoint 1. Software should set
this bit when there is any status change on the downstream ports,
embedded device or hub. It must be cleared by software when there
is no status change needs to be reported to the host through the
Endpoint1. If this bit is 0, a NAK handshake will be returned for next
IN token for HUB Endpoint 1. Reset clears this bit.
1 = Send STALL handshake
0 = Default
1 = Port status change bit is ready to be sent.
0 = Port status does not change. Respond with NAK.
STALL1
$005C
Bit 7
Universal Serial Bus Module (USB)
Figure 9-9. USB HUB Control Register 1 (HCR1)
0
PNEW
6
0
PCHG5
5
0
PCHG4
4
0
I/O Register Description of the HUB function
PCHG3
Universal Serial Bus Module (USB)
3
0
PCHG2
2
0
Advance Information
PCHG1
1
0
PCHG0
Bit 0
0
131
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