CY82C693UB Cypress Semiconductor Corporation., CY82C693UB Datasheet - Page 142

• Manufacturer Part Number: CY82C693UB
• Description: Hypercache Tm / Stand-alone Pci Peripheral Controller With Usb
• Manufacturer: Cypress Semiconductor Corporation.

Register 14: HcFmNumber (Read Only) - Offset=3CH with a 32-bit access
Register 15: HcPeriodicStart (Read/Write) - Offset=40H with a 32-bit access
Register 16: HcLSThreshold (Read/Write) - Offset=44H with a 32-bit access
Register 17: HcRhDescriptorA (Read/Write) - Offset=48H with a 32-bit access
Bit
31:16
15:0
Bit
31:14
13:0
Bit
31:12
11:0
Bit
31:24
23:13
12
11
10
9
8
7:0
Function
Reserved.
Frame Number:
This field is a 16 bit incrementing counter. The count is incremented coincident with the
loading of FrameRemaining. The count will roll over from ‘FFFFH’ to ‘0H.’
Function
Reserved.
Periodic Start:
This field contains a value used by the List Processor to determine where in a frame the
Periodic List processing must begin.
Function
Reserved.
LS Threshold:
This field contains a value used by the Frame Management block to determine whether or
not a low speed transaction can be started in the current frame.
Function
Power On To Power Good Time:
Host Controller power switching is effective within 2 ms. The field value is represented as the
number of 2 ms intervals.
Only bits [25:24] are implemented as Read/Write. The remaining bits are Read Only as ‘0’.
It is not expected that these bits be written to anything other than 1H, but limited adjustment
is provided. This field should be written to support the system implementation. This field
should always be written to a non-zero value.
Reserved.
No Over Current Protection:
The Host Controller implements global over-current reporting
0:
1:
This bit should be written to support the external system port over-current implementation.
Over Current Protection Mode:
The Host Controller implements global over-current reporting
0:
1:
This bit is only valid when NoOverCurrentProtection is cleared. This bit should be written ‘0’.
Device Type:
Read Only. The CY82C693UB USB Host Controller is not a compound device.
No Power Switching:
The Host Controller implements a global power switching mode.
0:
1:
This bit should be written to support the external system port power switching implementation.
Power Switching Mode:
The Host Controller implements a global power switching mode.
0:
1:
This bit is only valid when NoPowerSwitching is cleared. this bit should be written ‘0’.
Number Downstream Ports:
Read Only. The CY82C693UB USB Host Controller supports two downstream ports.
Over-current status is reported
Over-current status is not reported
Global Over-Current
Individual Over-Current
Ports are power switched
Ports are always powered on
Global Switching
Individual Switching
PRELIMINARY
142
CY82C693UB
Default
0H
0H
Default
0H
0H
Default
0H
0H
Default
01H
0H
0H
0
0
0
0
02H