20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 225

• 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

Chapter 20 10Base-T Ethernet
Bit(s)
Bit(s)
(network port clock disabled in NACR)
(network port clock enabled in NACR)
7:5
4:0
7:6
Network Port A Pin Control Register
Network Port A Pin Control Register
5
4
3
2
1
0
Value
Value
Write
Write
Write
Write
Write
Write
Read
Read
Read
Read
Read
Read
000
010
100
xx1
110
RXD+ and RXD- normal operation (differential inputs).
RXD+ singled-ended true input. RXD- is the valid-signal qualifier (active high).
RXD+ single-ended true input. RXD- not used by receiver.
RXD+ single-ended negative input. RXD- not used by receiver.
RXD+ singled-ended true input. RXD- is the valid-signal qualifier;
RXD+ is XORd with NAPCR[7] and RXD- is XORd with NAPCR[6] to provide
level inversion.
These bits are unused and should be written with zeros.
These bits are unused and should be written with zero.
Current state of TXDD+.
Drive TXDD+ with value.
Current state of TXD+.
Drive TXD+ with value.
Current state of TXDD-.
Drive TXDD- with value.
Current state of TXD-.
Drive TXD- with value.
Current state of RXD+.
Ignored.
Current state of RXD-.
Ignored.
(NAPCR)
(NAPCR)
Description
Description
(Address = 0x0208)
(Address = 0x0208)
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