KSZ8851SNLI Micrel Inc, KSZ8851SNLI Datasheet - Page 55

• Manufacturer Part Number: KSZ8851SNLI
• Manufacturer: Micrel Inc

Specifications of KSZ8851SNLI

• Operating Supply Voltage (typ): 3.3V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Supplier Unconfirmed

0x88 – 0x8B: Reserved
RX Duration Timer Threshold Register (0x8C – 0x8D): RXDTTR
This register is used to program the received frame duration timer threshold.
RX Data Byte Count Threshold Register (0x8E – 0x8F): RXDBCTR
This register is used to program the received data byte count threshold.
Interrupt Enable Register (0x90 – 0x91): IER
This register enables the interrupts from the QMU and other sources.
August 2009
Micrel, Inc.
Bit
15-0
Bit
15-0
Bit
15
14
13
12
11
10
9
8
7
6
5
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
Default Value
0x0000
Default Value
0x0000
Default Value
R/W
RW
R/W
RW
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
RXDTT Receive Duration Timer Threshold
To program received frame duration timer threshold value in 1us interval. The maximum value is
0xCFFF.
When bit 7 set to 1 in RXQCR register, the KSZ8851SNL will set RX interrupt (bit 13 in ISR) after
the time starts at first received frame in RXQ buffer and exceeds the threshold set in this register.
Description
RXDBCT Receive Data Byte Count Threshold
To program received data byte threshold value in byte count.
When bit 6 set to 1 in RXQCR register, the KSZ8851SNL will set RX interrupt (bit 13 in ISR)
when the number of received bytes in RXQ buffer exceeds the threshold set in this register.
Description
LCIE Link Change Interrupt Enable
When this bit is set, the link change interrupt is enabled.
When this bit is reset, the link change interrupt is disabled.
TXIE Transmit Interrupt Enable
When this bit is set, the transmit interrupt is enabled.
When this bit is reset, the transmit interrupt is disabled.
RXIE Receive Interrupt Enable
When this bit is set, the receive interrupt is enabled.
When this bit is reset, the receive interrupt is disabled.
Reserved
RXOIE Receive Overrun Interrupt Enable
When this bit is set, the Receive Overrun interrupt is enabled.
When this bit is reset, the Receive Overrun interrupt is disabled.
Reserved
TXPSIE Transmit Process Stopped Interrupt Enable
When this bit is set, the Transmit Process Stopped interrupt is enabled.
When this bit is reset, the Transmit Process Stopped interrupt is disabled.
RXPSIE Receive Process Stopped Interrupt Enable
When this bit is set, the Receive Process Stopped interrupt is enabled.
When this bit is reset, the Receive Process Stopped interrupt is disabled.
Reserved
TXSAIE Transmit Space Available Interrupt Enable
When this bit is set, the Transmit memory space available interrupt is enabled.
When this bit is reset, the Transmit memory space available interrupt is disabled.
RXWFDIE Receive Wake-up Frame Detect Interrupt Enable
When this bit is set, the Receive wakeup frame detect interrupt is enabled.
When this bit is reset, the Receive wakeup frame detect interrupt is disabled.
55
KSZ8851SNL/SNLI
M9999-083109-2.0