XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 123

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

9.4.3 USB SIE Timing Interrupt Register (SIETIR)
MC68HC(7)08KH12
MOTOROLA
—
Rev. 1.0
Address:
SUSP1-SUSP4 — Downstream Port Selective Suspend Bit
D1+/D1– to D4+/D4– — Downstream Port Differential Data
Reset:
Read:
Write:
This read/write bit forces the downstream port entering the selective
suspend mode. This bit can be set by the host request
SetPortFeature (PORT_SUSPEND) only. When this bit is set, the hub
prevents propagating any bus activity (except the port reset or port
resume request or the global reset signal) downstream, and the port
can only reflect upstream bus state changes via the endpoint 1 of the
hub. The blocking occurs at the next EOF2 point when this bit is set.
Reset clears this bit.
These read only bits are the differential data shown on the HUB
downstream ports. When the bit SUSPND in the register HRPCR is 0,
the data is the latched state at the last EOF2 sample point. When the
bit SUSPND is 1, the data reflects the current state on the data line
while accessing this register.
1 = Force downstream port enters the selective suspend mode
0 = Default
Figure 9-4. USB SIE Timing Interrupt Register (SIETIR)
$0056
SOFF
Bit 7
Universal Serial Bus Module (USB)
0
EOF2F
= Unimplemented
6
0
EOPF
5
0
TRANF
4
0
I/O Register Description of the HUB function
SOFIE
Universal Serial Bus Module (USB)
3
0
EOF2IE
2
0
Advance Information
EOPIE
1
0
TRANIE
Bit 0
0
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