Specification
NET2270 USB Interface Controller
______________________________________________________________________________
NetChip Technology, Inc., 2003
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490
FAX (650) 526-1494
http://www.netchip.com
Rev 3.6, April 17, 2003
49
8.3
Numeric Register Listing
This table shows the number of address bits required to access a register directly. If only four address bits are
supplied to the chip, then the registers that require 5 address bits must be addressed indirectly using
REGADDRPTR and REGDATA.
Addresses marked with (P) are paged registers selected by the Page Select field in the PAGESEL register.
Address
Address bits
Required
D[15:8]
D[7:0]
Register Description
00h
1
REGADDRPTR
Register Address Pointer for indirect register addressing
01h
1
REGDATA1
REGDATA
Register Data port for indirect register addressing
02h
2
IRQSTAT0
Interrupt Status Register (low byte)
03h
2
IRQSTAT1
Interrupt Status Register (high byte)
04h
3
PAGESEL
Page Select Register. Select current Endpoint
05h (P)
3
EP_DATA1
EP_DATA
Endpoint Data Register
06h (P)
3
EP_STAT0
Endpoint Main Status
07h (P)
3
EP_STAT1
08h (P)
4
EP_TRANSFER0
For IN endpoint, number of bytes to transfer to host.
09h (P)
4
EP_TRANSFER1
0Ah (P)
4
EP_TRANSFER2
0Bh (P)
4
EP_IRQENB
Endpoint Interrupt Enable
0Ch (P)
4
EP_AVAIL0
For IN endpoints, number of available spaces in buffer.
0Dh (P)
4
EP_AVAIL1
For OUT endpoints, number of bytes in buffer.
0Eh (P)
4
EP_RSPCLR
Endpoint Response Register Clear
0Fh (P)
4
EP_RSPSET
Endpoint Response Register Set
10-17h
5
Reserved
18h
5
USBCTL0
USB Control
19h
5
USBCTL1
1Ah
5
FRAME0
Frame Counter
1Bh
5
FRAME1
1Ch
5
DMAREQ
DMA Request Control Register
1Dh
5
SCRATCH
General-Purpose Scratchpad register
1E-1Fh
5
Reserved
20h
Indirect Only
IRQENB0
Interrupt Enable Register
21h
Indirect Only
IRQENB1
22h
Indirect Only
LOCCTL
Local Bus Control Register
23h
Indirect Only
CHIPREV
Chip Revision Number
24-27h
Indirect Only
Reserved
28h (P)
Indirect Only
EP_MAXPKT0
Endpoint Max Packet Size
29h (P)
Indirect Only
EP_MAXPKT1
2Ah (P)
Indirect Only
EP_CFG
Endpoint Configuration
2B-2Fh
Indirect Only
Reserved
30h
Indirect Only
OURADDR
Our USB address
31h
Indirect Only
USBDIAG
Diagnostic Register
32h
Indirect Only
USBTEST
USB 2.0 Test Control Register
33h
Indirect Only
XCVRDIAG
Transceiver Diagnostic Register
34-3Fh
Indirect Only
Reserved
40h
Indirect Only
SETUP0
Setup byte 0
41h
Indirect Only
SETUP1
Setup byte 1
42h
Indirect Only
SETUP2
Setup byte 2
43h
Indirect Only
SETUP3
Setup byte 3
44h
Indirect Only
SETUP4
Setup byte 4
45h
Indirect Only
SETUP5
Setup byte 5
46h
Indirect Only
SETUP6
Setup byte 6
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