82C862 Datasheet, PDF (37/51 Pages) List of Unclassifed Manufacturers – FireLink USB Dual Controller Quad Port USB

FireLink USB
82C862
7
6
5
4
3
2
1
0
MEMOFST 40h-43h
HcPeriodicStart Register
Default = 00h
Bits [31:0] correspond to: 40h = [7:0], 41h = [15:8], 42h = [23:16], 43h = [31:24].
- Bits [13:0] Periodic Start - These bits are used by the List Processor to determine where in a frame the Periodic List processing must
begin.
- Bits [31:14] Reserved
MEMOFST 44h-47h
HcLSThreshold Register
Default = 00h
Bits [31:0] correspond to: 44h = [7:0], 45h = [15:8], 46h = [23:16], 47h = [31:24].
- Bits [11:0] LS Threshold - These bits contain a value used by the Frame Management Block to determine whether or not a low speed
transaction can be started in the current frame.
- Bits [31:12] Reserved
MEMOFST 48h
HcRhDescriptorA Register - Byte 0 (RO)
Number Downstream Ports - The USB core supports two downstream ports.
Default = 02h
MEMOFST 49h
HcRhDescriptorA Register - Byte 1
Default = 00h
Reserved
No Over-
Over-current Device Type
current
Protection
(RO):
Protection:(1)
Mode:
The USB core
0 = Over-
0 = Global over- _{is not a}
current
current
compound
status is
reported
1 = Individual
Over-
device.
1 = Over-
Current
current
This bit is only
status is not _{valid when bit 4}
reported _{is cleared.}
This bit should
be written to 0.
No Power
Switching:(1)
0 = Ports are
powered
switched
1 = Ports are
always
powered on
Power
Switching
Mode:
0 = Global
switching
1 = Individual
switching
This bit is only
valid when bit 1
is cleared.
This bit should
be written to 0.
(1) Bits 4 and 1 should be written to support the external system port over-current and switching implementations.
MEMOFST 4Ah
HcRhDescriptorA Register - Byte 2
Reserved
Default = 00h
MEMOFST 4Bh
HcRhDescriptorA Register - Byte 3
Default = 01h
Power-On to Power-Good Time
- The USB core power switching is effective within 2ms. The field value is represented as the number of 2ms intervals. This field should
be written to support the system implementation. This field should always be written to a non-zero value.
MEMOFST 4Ch-4Dh
HcRhDescriptorB Register - Bytes 0 & 1
Default = 00h
Bits [15:0] correspond to: 4Ch = [7:0], 4Dh = [15:8].
- Bit 0
Reserved
- Bits [15:1] Device Removable - USB core ports default to removable devices:
0 = Device not removable
1 = Device removable
Bit 15 corresponds to Port 15, Bit 14 corresponds to Port 14, the remaining bits follow suit. Unimplemented ports are
reserved.
912-2000-030
Revision 1.0
®
Page 33