cp3ub17 National Semiconductor Corporation, cp3ub17 Datasheet - Page 153
cp3ub17
Manufacturer Part Number
cp3ub17
Description
Reprogrammable Connectivity Processor With Usb Interface
Manufacturer
National Semiconductor Corporation
Datasheet
1.CP3UB17.pdf
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24.0 Register Map
Table 53 is a detailed memory map showing the specific
memory address of the memory, I/O ports, and registers.
The table shows the starting address, the size, and a brief
description of each memory block and register. For detailed
information on using these memory locations, see the appli-
cable sections in the data sheet.
All addresses not listed in the table are reserved and must
not be read or written. An attempt to access an unlisted ad-
dress will have unpredictable results.
Each byte-wide register occupies a single address and can
be accessed only in a byte-wide transaction. Each word-
wide register occupies two consecutive memory addresses
and can be accessed only in a word-wide transaction. Both
MCNTRL
FAR
NFSR
MAEV
MAMSK
ALTEV
ALTMSK
TXEV
TXMSK
RXEV
RXMSK
NAKEV
NAKMSK
FWEV
FWMSK
FNH
FNL
DMACNTRL
DMAEV
DMAMSK
MIR
DMACNT
DMAERR
Register Name
Table 53 Detailed Device Mapping
Size
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
USB Node Registers
FF FD8Ch
FF FD9Ch
FF FDAAh
FF FDACh
FF FDAEh
FF FD88h
FF FD8Ah
FF FD8Eh
FF FD90h
FF FD96h
FF FD98h
FF FD9Ah
FF FD9Eh
FF FDA0h
FF FDA2h
FF FDA4h
FF FDA6h
FF FDA8h
FF FDB0h
FF FDB2h
FF FD80h
FF FD92h
FF FD94h
Address
153
the byte-wide and word-wide registers reside at word
boundaries (even addresses). Therefore, each byte-wide
register uses only the lowest eight bits of the internal data
bus.
Most device registers are read/write registers. However,
some registers are read-only or write-only, as indicated in
the table. An attempt to read a write-only register or to write
a read-only register will have unpredictable results.
When software writes to a register in which one or more bits
are reserved, it must write a zero to each reserved bit unless
indicated otherwise in the description of the register. Read-
ing a reserved bit returns an undefined value.
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Access
Type
Value After
Reset
C0h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
1Fh
00h
00h
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