Rev. 3.0, 03/01, page 141 of 390
(9) Rx Control Register (IRCR)
Address: H'1000710C (Bank 0, Read/ Write)
Bit
7
6
5
4
3
2
1
0
Bit Name
RFTL
ACRCC
RADM1
RADM0
SYNIEN -
RFRIEN SCIEN
Initial Value
0
1
0
0
0
-
0
0
R/W
R/W
R/W
R/W
R/W
R/W
-
R/W
R/W
Bit
Description
Default
7
Rx FIFO Threshold Level (RFTL)
Setting this bit to ‘1’ sets the Rx FIFO threshold to half-full (more than 8 bytes of Receive
data are still remaining in FIFO).
Setting this bit to ‘0’ sets the Rx FIFO threshold to not empty (more than 1 byte of Receive
data remaining in FIFO).
This setting affect DMA request timing.
0
6
Automatic CRC check (ACRCC)
Setting this bit to ‘1’ enables automatic CRC checking of all incoming packets.
Setting this bit to ‘0’ disables CRC checking. Disabling this bit results in no CRC errors
being reported.
1
5 - 4
RX Address Mode (RADM[1:0])
Specify the type of address filtering to apply for determining which receive frames to
accept.
b5 b4 Rx Address Mode
0 0 All packets accepted
0 1 Address must match Frame Address Register (FAR)
1 0 Address (high nibble) must match FAR
1 1 Reserved
Note: Packets with a universal address 0x7F are always accepted.
00
3
Sync/Hunt Change interrupt Enable (SYNIEN)
Enables Sync/Hunt Change interrupt: Setting this bit to 1 enables Sync/Hunt Change
interrupts.
0
2
Reserved
-
1
Rx FIFO Ready Interrupt Enable (RFRIEN)
Setting this bit to ‘1’ enables Rx FIFO Ready interrupts.
Setting this bit to ‘0’ disables Rx FIFO Ready interrupts.
0
0
Special Condition Interrupt Enable (SCIEN)
Setting this bit to ‘1’ enables the following special condition interrupts:
•
Overrun
•
Frame Error
•
End of Frame (EOF)
•
Rx Abort
Setting this bit to ‘0’ disables the above special condition interrupts
0
Summary of Contents for HD64465
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