SC92031L SILAN [Silan Microelectronics Joint-stock], SC92031L Datasheet - Page 9

• Manufacturer Part Number: SC92031L
• Description: 10/100 MBPS INTEGRATED PCI ETHERNET MEDIA ACCESS CONTROLLER AND PHYSICAL LAYER
• Manufacturer: SILAN [Silan Microelectronics Joint-stock]

1 Config 0: Configuration Register 0 (Offset 0000h, R/W)
2 Config 1: Configuration Register 1 (Offset 0004h, R/W)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
29-24
23-21
20-4
28-0
Bit
3-0
31
30
Bit
31
30
29
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
-
-
-
Rx FIFO Threshold
Early Reception
Early Transmission Set to 1 enable early transmission when reach TX threshold
-
-
Rx Buffer Length
Software Reset
Analog Power
Down
Power Saving
-
Symbol
Symbol
Set to 1 indicates enable early reception
Reserved
Rx FIFO Threshold: Specifies Rx FIFO Threshold level. When the
number of the received data bytes from a packet, which is being
received into Rx FIFO, has reached to this level (or the FIFO has
contained a complete packet), the receive PCI bus master function will
begin to transfer the data from the FIFO to the host memory. This field
sets the threshold level according to the following fomula:
The chip begins the transfer of data after having received a whole
packet in the FIFO.
Reserved
Rx Buffer Length: This field indicates the size of the Rx ring buffer.
0000 = 8k Bytes
0011 = 32k Bytes
1111 = 128k Bytes
Reset: Setting to 1 forces the chip to a software reset state which
disables the transmitter and receiver, reinitializes the FIFOs, resets the
system buffer pointer to the initial value (Tx buffer is at TSAD0, Rx
buffer is empty). The values of IDR0-5 and MAR0-7 and PCI
configuration space will have no changes. This bit is 1 during the reset
operation, and is cleared to 0 by the driver when the reset operation is
complete.
Analog Power Down:
1: Turn off the analog power of the chip internally.
0: Normal working state. This is also power-on default value.
Power Saving Mode:
1: Disable.
0: Enable. When cable is disconnected, the analog part will power
down itself automatically except PHY Rx part and part of twister to
monitor SD signal in case that cable is re-connected and Link should
be established again.
Reserved
Threshold_Level = 16 * 2 ** Rx_FIFO_Threshold
0001 = 16k Bytes
0111 = 64k Bytes
Description
Description
REV:1.0
SC92031
Page 9 of 38
2004.08.03