参数资料
型号: KSZ8842-PMBL AM
厂商: Micrel Inc
文件页数: 58/119页
文件大小: 0K
描述: IC ETHERNET SW 2PORT 100-LFBGA
标准包装: 260
控制器类型: 以太网开关控制器
接口: PCI
电源电压: 3.1 V ~ 3.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 100-LFBGA
供应商设备封装: 100-LFBGA
包装: 托盘
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-1636-ND - BOARD EVALUATION KSZ8842-PMQL
其它名称: 576-3348
Micrel, Inc.
KSZ8842-PMQL/PMBL
October 2007
43
M9999-100207-1.5
Bit
Default
Description
7 – 0
0x00
Interrupt Line
Provides interrupt line routing information. The basic input/output system
(BIOS) writes the routing information into to this field when it initialized and
configures the system.
The value in this field indicates which input of the system interrupt controller is
connected to the KSZ8842-PMQL/PMBL’s interrupt pin/ball. The driver uses
this information to determine priority and vector information. Values in this field
are system architecture specific.
The following table shows the access rules of the register.
Category
Description
Value after hardware reset
0x281401XX
PCI Control & Status Registers
The PCI CSR registers are all 32 bit in Little Endian format. For PCI register Read cycle, the KSZ8842-PMQL/PMBL
allows any different combination of CBEN. For PCI register bus cycles, only byte, word (16-bit), or Dword (32-bit)
accesses are allowed. Any other combinations are illegal, and will be target aborted.
MAC DMA Transmit Control Register (MDTXC Offset 0x0000)
The MAC DMA transmit control register establishes the transmit operating modes and commands for the port. This
register should be one of the last CSRs to be written as part of the transmit initialization.
The following table shows the register bit fields.
Bit
Default
R/W
Description
31 – 30
-
RO
Reserved
29 – 24
0x00
RW
MTBS DMA Transmit Burst Size
This field indicates the maximum number of words to be transferred in one
DMA transaction. If reset, the MAC DMA burst size is limited only by the
amound of data stored in the transmit buffer before issuing a bus request. The
MTBS can be programmed with the following permissible values: 0,1, 2, 4, 8,
16, or 32.
After reset, the MTBS default is 0, i.e., unlimited.
23 – 19
0x00
RO
Reserved
18
0
RW
MTUCG MAC Transmit UDP Checksum Generate
When set, the KSZ8842-PMQL/PMBL will generate correct UDP checksum for
outgoing UDP/IP frames at port.
When this bit is set, ADD CRC should also turn on.
17
0
RW
MTTCG MAC Transmit TCP Checksum Generate
When set, the KSZ8842-PMQL/PMBL will generate correct TCP checksum for
outgoing TCP/IP frames at port.
When this bit is set, ADD CRC should also turn on.
16
0
RW
MTICG MAC Transmit IP Checksum Generate
When set, the KSZ8842-PMQL/PMBL will generate correct IP checksum for
outgoing IP frames at port.
When this bit is set, ADD CRC should also turn on.
15 – 10
0x00
RO
Reserved
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