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参数资料
| 型号： | DP83957 |
| 文件页数： | 9/24页 |
| 文件大小： | 240K |
| 代理商： | DP83957 |
60 Register Description (Continued)
611 DP83950 ID 1 REGISTER (0x30)
The DP83950 ID Registers 1 and 2 are used to associate one or two DP83950’s in a multi-DP83950 repeater system with a
DP83957
The ID address which is placed in these registers must correspond to the value that is placed in the DP83950’s Address
Register These registers are located at Page 0 Address 0x17 in DP83950 Refer to Section 80 RIC Registers of the DP83950
data sheet for more information
Reset State
0x00
Bit
Bit Name
Access
Bit Description
D 76
RES
Reserved
D 50
RICID
1 50
ReadWrite
This is the ID for the first DP83950 which is associated with this DP83957
612 DP83950 ID 2 REGISTER (0x31)
Reset State
0x00
Bit
Bit Name
Access
Bit Description
D 76
RES
Reserved
D 50
RICID
2 50
ReadWrite
This is the ID for the second DP83950 which is associated with this DP83957
613 OVERFLOW STATUS 1 REGISTER (0x40)
Overflow Status Registers 1 and 2 are used to indicate a Port Attribute overflow Overflow Status Register 1 must be used in
conjunction with Overflow Register 2 to determine the overflow attribute
If an overflow interrupt occurs the CPU must in the first instance read Overflow Status Register 1 to determine on which
DP83950 (ie 1 or 2) and Port number the overflow occurred Following this Overflow Register 2 needs to be read to determine
the actual Port attribute which caused the interrupt
Reset State
0x00
Bit
Bit Name
Access
Bit Description
D 75
RES
Read
Reserved
D4
RIC
ID
Read
This bit indicates which one of the two DP83950’s connected to the DP83957 has an attribute
overflow
This bit is encoded as follows
0 represents DP83950 ID 1
1 represents DP83950 ID 2
D 30
PORT
NUM
Read
These 4 bits indicate which one of the 13 ports of the particular DP83950 identified in bit D4
has an attribute overflow
The attribute which has overflowed is recorded in the Overflow Status Register 2 (refer to
Section 614)
17
相关PDF资料 |
PDF描述 |
|---|---|
| DP83957VF | REPEATER MANAGEMENT|QFP|80PIN|PLASTIC |
| DP83959AVUL | LAN Hub Controller |
| DP83BC04BJ | Single 8-bit Bus Transceiver |
| DP83BC04BN | Single 8-bit Bus Transceiver |
| DP8400-2 | Error Detection & Correction (EDAC) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DP83957VF | 制造商:未知厂家 制造商全称:未知厂家 功能描述:REPEATER MANAGEMENT|QFP|80PIN|PLASTIC |
| DP83959 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Port Lite Ethernet Repeater Interface Controller |
| DP83959AVUL | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LAN Hub Controller |
| DP83959VUL | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Port Lite Ethernet Repeater Interface Controller |
| DP83BC04BJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single 8-bit Bus Transceiver |
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