参数资料
型号: GT-48002A
厂商: Galileo Technology Services, LLC
英文描述: Switched Fast Ethernet Controller for 100BaseX(100BaseX交换式快速以太网控制器)
中文描述: 交换式快速以太网控制器(100BaseX交换式快速以太网控制器的100BaseX)
文件页数: 83/102页
文件大小: 1001K
代理商: GT-48002A
Switched Fast Ethernet Controller
Revision 1.2
81
Interrupt Mask, Offset: 0x 048
Serial Parameters, Offset: 0x040220
14
Interv
Intervention.
This bit is set by the GT-48002A upon transferring a
BUFFER_REQUEST message in Intervention mode.
0x0
15
IntervWrap
Intervention Wrap-Around.
This bit is set by the GT-48002A upon transferring
256 BUFFER_REQUEST messages in Intervention
mode.
0x0
Bi ts
Fi e l d Na m e
Fun cti o n
In iti a l Va l u e
15:0
MaskBits
Mask to the CPU interrupt line for the appropriate bits
in the Interrupt Cause register. The default is to mask
all interrupts.
0 - Mask Interrupt
1 - Do not mask Interrupt
0x0000
Bi ts
Fi e l d Na m e
Fun cti o n
In iti a l Va l u e
11:0
-
Reserved.
0x823
16:12
IPGData
Inter-Packet Gap (IPG): The IPG varies between 12
bit-times (0x3) and 124 bit-times (0x1F). The step is
40ns@100mbs or 400 ns@10mbs (4 bit-times). The
default value is 18 hex, or 0.96us@100mbs
(9.6uS@10mbs).
Value should be written in hexadecimal format.
Note: these bits may be changed only when PortEn
bits are set to 0 in all Port Control Registers (Port is
disabled).
0x18 = 24 decimal
21:17
DataBlind
Data Blinder:
The number of nibbles from the beginning of the IFG,
in which the GT-48002A will restart the IFG counter
when detecting a carrier activity. Following this value,
the GT-48002A will enter the Data Blinder zone and
will not reset the IFG counter to ensure fair access to
the medium.
Value should be written in hexadecimal format.
The default is 10 hex (64 bit times - 2/3 of the default
IFG). The step is 40ns (4 bit-times). Valid range is 3 to
1F hex nibbles.
Note: these bits may be changed only when PortEn
bits are set to 0 in all Port Control Registers (Port is
disabled).
0x10 = 16 decimal
25:22
Reserved
0xB
Bi ts
Fi e l d Na m e
Fun cti o n
In iti a l Va l u e
相关PDF资料
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