cp3ub17 National Semiconductor Corporation, cp3ub17 Datasheet - Page 72

• Manufacturer Part Number: cp3ub17
• Description: Reprogrammable Connectivity Processor With Usb Interface
• Manufacturer: National Semiconductor Corporation

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Name
EPC0
EPC1
EPC2
EPC3
EPC4
EPC5
EPC6
RXS0
RXS1
RXS2
TXS0
TXS1
TXS2
TXS3
TXC0
TXC1
TXC2
TXC3
TXD0
TXD1
TXD2
TXD3
Table 34 USB Controller Registers
FF FDDE8h
FF FDCCh
FF FDDCh
FF FDECh
FF FDC0h
FF FDD0h
FF FDD8h
FF FDE0h
FF FDC4h
FF FDD4h
FF FDE4h
FF FDC6h
FF FDE6h
FF FDC2h
FF FDD2h
FF FDE2h
FF FDF0h
FF FDF8h
FF FDF4h
FF FDF6h
FF FDF2h
FF FDD6
Address
Transmit Command 0
Transmit Command 1
Transmit Command 2
Transmit Command 3
Endpoint Control 0
Endpoint Control 1
Endpoint Control 2
Endpoint Control 3
Endpoint Control 4
Endpoint Control 5
Endpoint Control 6
Transmit Status 0
Transmit Status 1
Transmit Status 2
Transmit Status 3
Receive Status 0
Receive Status 1
Receive Status 2
Transmit Data 0
Transmit Data 1
Transmit Data 2
Transmit Data 3
Description
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
72
15.3.1
The MCNTRL register controls the main functions of the
USB node. The MCNTRL register provides read/write ac-
cess from the CPU bus. Reserved bits must be written with
0, and they return 0 when read. It is clear after reset.
USBEN
7
Name
RXS3
RXC0
RXC1
RXC2
RXC3
RXD0
RXD1
RXD2
RXD3
Reserved
Main Control Register (MCNTRL)
Table 34 USB Controller Registers
The USB Enable controls whether the USB
module is enabled. If the USB module is dis-
abled, the 48 MHz clock within the USB node
is stopped, all USB registers are initialized to
their reset state, and the USB transceiver forc-
es SE0 on the bus to prevent the hub from de-
tected the USB node. The USBEN bit is clear
after reset.
0 – The USB module is disabled.
1 – The USB module is enabled.
FF FDCEh
FF FDDEh
FF FDCAh
FF FDFCh
FF FDEEh
FF FDFEh
FF FDDAh
FF FDEAh
FF FDFAh
Address
4
NAT
3
Receive Command 0
Receive Command 1
Receive Command 2
Receive Command 3
Reserved
2
Receive Status 3
Receive Data 0
Receive Data 2
Receive Data 2
Receive Data 3
Description
Register
Register
Register
Register
Register
Register
Register
Register
Register
1
USBEN
0