net2890 ETC-unknow, net2890 Datasheet - Page 50

• Manufacturer Part Number: net2890
• Description: Interface Controller
• Manufacturer: ETC-unknow

Specification
5.6 Indexed Registers
5.6.1 (Index 00h; LOCALCTL) Local Bus Control
5.6.2 (Index 01h; OURADDR) Our USB Address Register
Note: When a Set Address command is sent from the host, the local CPU must write the new device
address into the OURADDR configuration register.
5.6.3 (Index 02h; IRQENB1) Interrupt Enable Register 1
Bits
Bits
Bits
____________________________________________________________________________________
7:2
1:0
6:0
6:5
7
7
4
3
2
1
0
Description
Reserved.
Local Clock Output. This field controls the frequency of the LCLK pin.
Description
Reserved.
Our USB Address. After the local CPU has successfully completed the status phase
of a SET Address request from the host, it writes the new device address into this
register. This register is cleared when a root port reset is detected
Description
SOF Interrupt Enable. When set, this bit enables a local interrupt to be generated
when a start-of-frame packet is received by the NET2890.
Reserved
Endpoint D Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Endpoint C Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Endpoint B Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Endpoint A Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Endpoint 0 Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
0 = 48 MHz clock derived from the internal oscillator
1 = 24 MHz clock derived from the internal oscillator
2 = 12 MHz clock derived from the internal oscillator
3 = stopped
335 Pioneer Way, Mountain View, California 94041
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NetChip Technology, Inc., 1999
Rev 2.0, Draft 9, July 16, 1999
http://www.netchip.com
NET2890 USB Interface Controller
Read
Read
Read
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Write
Write
Write
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Default
Default
Default
Value
Value
Value
0
0
0
0
0
0
0
0
0
0
0
50