KSZ8841-16 Micrel Semiconductor, KSZ8841-16 Datasheet - Page 64

• Manufacturer Part Number: KSZ8841-16
• Description: Single-port Ethernet Mac Controller With Non-pci Interface
• Manufacturer: Micrel Semiconductor

Bank 18 Receive Byte Count Reg
This regist
Frame in the RXQ.
Bank 18 Early Transmit Register (0x08): ETXR
This register specifies the threshold for the early transmit.
November 2005
Micrel Confidential
4
3
2
1
0
Bit
15-11
10-0
Bit
15-8
7
6-5
4-0
er ind
-
-
-
-
-
Default Value
-
-
Default Value
-
0x0
-
0x00
icates the
status o the current received frame and mirrors t
RO
RO
RO
RO
RO
R/W
RO
RO
R/W
RO
RW
RO
RW
f
ister (0x06): RXBC
When set, it indicates that this frame has a unicast address.
RXMR Receive MII Error
When set, it indicates that there is an MII symbol error on the received frame.
RXFT Receive Frame Type
When set, it indicates that the frame is an Ethernet-type frame (frame
than 1500 bytes).
When clear, it indicate that the frame is an IEEE 802.3 frame.
This bit is not valid for runt frames.
RXTL Receive Frame Too Long
When set, it indicates that the frame length exc
Frames that are too long are passed to the host only if the pass bad frame bit is set
(bit 9 in RXCR register).
Note: Frame too long is only a frame length indication and does not ca
truncation.
RXRF Receive Runt Frame
When set, it indicates that a frame was damaged by a collision or prem
termination before the collision window has passed. Runt frames are p
host only if the pass bad frame bit is set (bit 9 in R
RXCE Receive CRC Error
When set, it indicates that a CRC error has occurred on the current re
CRC error frame is passed to the host only if th
RXCR register)
Description
Reserved.
RXBX Receive Byte Count
Receive by
Description
Reserved.
TXEE Early Transmit Enable
When this bit is set, the Early Transmit function is enabled.
When this bit is cleared, normal operation is assumed.
Reserved.
ETXTH Early Transmit Threshold
The threshold for Early Transmit. Sp
bytes written in memory for the pres
Early Transmit will be started on the network interface.
When early transmit is enabled, se
behavior is unknown.
te count.
64
tting this field to 0 is invalid, and the hardware
ently transmitting packet exceeds the threshold,
ecified in unit of 64-byte. Whenever the number of
he Receive Byte Count word of the Receive
eeds the maximum size of 1916 bytes.
e pass bad frame bit is set (bit 9 in
XCR register).
KSZ8841-16/32 MQL/MVL
ceived frame. A
length is greater
use any frame
assed to the
ature
Rev 1.3