KSZ8842-16MQL Micrel Inc, KSZ8842-16MQL Datasheet - Page 64

• Manufacturer Part Number: KSZ8842-16MQL
• Description: IC SWITCH 10/100 16BIT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8842-16MQL

• Data Rate: 100Mbps
• Controller Type: Ethernet Switch Controller
• Interface: PCI
• Voltage - Supply: 3.1 V ~ 3.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• No. Of Ports: 1
• Ethernet Type: IEEE 802.3u
• Supply Current: 122mA
• Supply Voltage Range: 3.1V To 3.5V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: QFP
• No. Of: RoHS Compliant
• Number Of Primary Switch Ports: 2
• Internal Memory Buffer Size: 32
• Operating Supply Voltage (typ): 3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 3.5V
• Operating Supply Voltage (min): 3.1V
• Operating Temperature Classification: Commercial
• Interface Type: PCI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1634 - BOARD EVALUATION KSZ8842-16MQL
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1478-5

Bank 18 Receive Status Register (0x04): RXSR
This register indicates the status of the current received frame and mirrors the Receive Status word of the Receive Frame
in the RXQ.
Bank 18 Receive Byte Counter Register (0x06): RXBC
This register indicates the status of the current received frame and mirrors the Receive Byte Count word of the Receive
Frame in the RXQ.
Micrel Confidential
Bit
15
14-9
8
7
6
5
4
3
2
1
0
Bit
15-11
10-0
November 2005
Default Value
-
-
-
-
-
-
-
-
-
-
-
Default Value
-
-
R/W
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
R/W
RO
RO
Description
RXFV Receive Frame Valid
When set, it indicates that the present frame in the receive packet memory is valid.
The status information currently in this location is also valid.
When clear, it indicates that there is either no pending receive frame or that the
current frame is still in the process of receiving.
Reserved
RXSPN Receive Source Port Number
When set, this field indicates the source port where the packet was received.
Valid ports are either port 1 or port 2.
RXBF Receive Broadcast Frame
When set, it indicates that this frame has a broadcast address.
RXMF Receive Multicast Frame
When set, it indicates that this frame has a multicast address (including the broadcast
address).
RXUF Receive Unicast Frame
When set, it indicates that this frame has a unicast address.
Reserved
RXFT Receive Frame Type
When set, it indicates that the frame is an Ethernet-type frame (frame length is greater
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 exceeds the maximum size of 1916 bytes.
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 cause any frame
truncation.
RXRF Receive Runt Frame
When set, it indicates that a frame was damaged by a collision or premature
termination before the collision window has passed. Runt frames are passed to the
host only if the pass bad frame bit is set (bit 9 in RXCR register).
RXCE Receive CRC Error
When set, it indicates that a CRC error has occurred on the current received frame. A
CRC error frame is passed to the host only if the pass bad frame bit is set (bit 9 in
RXCR register).
Description
Reserved
RXBC Receive Byte Count
Receive Byte Count.
64
KSZ8842-16/32 MQL/MVL
Rev. 1.4