CY82C693UB Cypress Semiconductor Corporation., CY82C693UB Datasheet - Page 141

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

Register 9: HcControlCurrentED (Read/Write) - Offset=24H with a 32-bit access
Register 10: HcBulkHeadED (Read/Write) - Offset=28H with a 32-bit access
Register 11: HcBulkCurrentED (Read/Write) - Offset=2CH with a 32-bit access
Register 12: HcDoneHead (Read/Write) - Offset=30H with a 32-bit access
Register 13: HcFmInterval (Read/Write) - Offset=34H with a 32-bit access
Register 13: HcFrameRemaining (Read Only) - Offset=38H with a 32-bit access
Bit
31:4
3:0
Bit
31:4
3:0
Bit
31:4
3:0
Bit
31:4
3:0
Bit
31
30:16
15:14
13:0
Bit
31
30:14
13:0
Function
Control Current ED:
Pointer to the current Control List ED.
Reserved.
Function
Bulk Head ED:
Pointer to the Bulk List Head ED.
Reserved.
Function
Bulk Current ED:
Pointer to the current Bulk List ED.
Reserved.
Function
Done Head:
Pointer to the current Done List Head ED.
Reserved.
Function
Frame Interval Toggle:
This bit is toggled by Host Controller Driver whenever it loads a new value into FrameInterval.
FS Largest Data Packet:
This field specifies a value which is loaded into the Largest Data Packet Counter at the
beginning of each frame.
Reserved.
Frame Interval:
This field specifies the length of a frame as (bit times – 1). For 12,000 bit times in a frame, a
value of 11,999 is stored here.
Function
Frame Remaining Toggle:
This bit is loaded with FrameIntervalToggle when FrameRemaining is loaded.
Reserved.
Frame Remaining:
This field is a 14 bit decrementing counter used to time a frame. When the Host Controller is
in the USBOperational state the counter decrements each 12 MHz clock period. When the
count reaches 0, the end of a frame has been reached. The counter reloads with FrameInter-
val at that time. In addition, the counter loads when the Host Controller transitions into USB-
Operational state.
PRELIMINARY
141
CY82C693UB
Default
0H
0H
Default
0H
0H
Default
0H
0H
Default
0H
0H
Default
0H
2EDFH
Default
0
0H
0H