20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 222

• Manufacturer Part Number: 20-668-0024
• Description: IC CPU RABBIT4000 128-LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0024

• Processor Type: Rabbit 4000 8-bit
• Speed: 60MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: 20-668-0022; 316-1078

212
(Write-
(Read-
(Read-
(Read-
(Read-
(Read-
(Read-
Bit(s)
only)
only)
only)
only)
only)
only)
only)
Network Port A Control/Status Register
7:2
7:2
1:0
7
6
5
4
3
2
Value
read
00
01
10
11
0
1
0
1
0
1
0
1
0
1
0
1
0
1
The corresponding interrupt is disabled.
The corresponding interrupt is enabled.
These bits, and the network port interrupt, are automatically cleared by a read of
this register. The individual interrupt enables are not affected.
No frame received.
Frame received error-free.
No error on received frame.
Frame received with error (either CRC error, alignment error or FIFO overflow).
Frames received with error are discarded and memory buffer space is reclaimed.
Frame transmission not complete.
Frame transmitted without error.
No error on frame transmission.
Frame transmission aborted because of error (either excessive collisions, FIFO
underrun, or jabber condition). The memory buffer space is not reclaimed.
None of the error counters have overflowed.
One or more of the error counters have overflowed. The overflow condition is
flagged when one or more of the error counters reaches 080h.
No link failure or jabber condition.
Either a link status change or jabber condition has been detected.
The Network Port interrupt is disabled.
The Network Port uses Interrupt Priority 1.
The Network Port uses Interrupt Priority 2.
The Network Port uses Interrupt Priority 3.
(NACSR)
Description
Rabbit 4000 Microprocessor User’s Manual
(Address = 0x0204)