參數(shù)資料
型號(hào)： CDK8920A
廠商： Cirrus Logic, Inc.
英文描述： CRYSTAL LAN ISA PLUG-AND-PLAY ETHERNET CONTROLLER
中文描述： 水晶藍(lán)的ISA即插即用，即插即用以太網(wǎng)控制器
文件頁數(shù)： 59/144頁
文件大?。?/td> 1229K
代理商： CDK8920A
Register C: Buffer Event (BufEvent, Read-only)
Address: PacketPage base + 012Ch
F
E
D
C
B
A
9
8
7
6
5-0
RxDest
Rx128
RxMiss
TxUnder
run
Rdy4Tx
RxDMA
Frame
SWint
001100
BufEvent gives the status of the transmit and receive buffers.
BIT
NAME
DESCRIPTION
5-0
001100
These bits provide an internal address used by the CS8920A to identify this as the
Buffer Event Register. When reading this register, these bits will be 001100, where the
LSB corresponds to Bit 0.
6
SWint
When set, there has been a software initiated interrupt. This bit is used in conjunction
with the SWint-X bit (Register B, BufCFG, Bit 6).
7
RxDMAFrame
When set, one or more received frames have been transferred by slave DMA. When
RxDMAiE (Register B, BufCFG, Bit 7) is set, there is an interrupt.
8
Rdy4Tx
When set, the CS8920A is ready to accept a frame for transmission from the host.
When Rdy4TxiE (Register B, BufCFG, Bit 8) is set, there is an interrupt. (See Section
5.8 for a description of the transmit bid process.)
9
TxUnderrun
This bit is set if CS8920A runs out of data before it reaches the end of the frame
(called a transmit underrun). If TxUnderruniE (Register B, BufCFG, Bit 9) is set, there is
an interrupt.
A
RxMiss
When set, one or more receive frames have been lost due to slow movement of data
out of the receive buffers. If RxMissiE (Register B, BufCFG, Bit A) is set, there is an
interrupt.
B
Rx128
This bit is set after the first 128 bytes of an incoming frame have been received. This
bit will allow the host the option of pre-processing frame data before the entire frame is
received. If Rx128iE (Register B, BufCFG, Bit B) is set, there is an interrupt.
F
RxDest
When set, this bit shows that a receive frame has passed the Destination Address
Filter criteria as defined in the RxCTL register (Register 5). This bit is useful as an early
indication of an incoming frame. It will be earlier than Rx128 (Register C, BufEvent, Bit
B). If RxDestiE (Register B, BufCFG, Bit F) is set, there is an interrupt.
This register’s initial state after reset is:
0000 0000
0000 1100
NOTE:
With any event register, like BufEvent, all bits are cleared upon readout. The host is responsible for
processing all event bits.
CS8920A
DS238PP2
59
相關(guān)PDF資料
PDF描述
CDL13005 NPN PLASTIC POWER TRANSISTOR
CDLL4150-1 SWITCHING DIODE
CDLL4567A Single Schmitt-Trigger Inverter 5-SOT-23 -40 to 85
CDLL4568 TEMPERATURE COMPENSATED ZENER REFERENCE DIODES
CDLL4568A Single Schmitt-Trigger Inverter 5-SC70 -40 to 85
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CDKEIL 功能描述:開發(fā)軟件 Devel Software and Documention CD RoHS:否 制造商:Atollic Inc. 產(chǎn)品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
CDKEIL-US 功能描述:開發(fā)軟件 DEVELOPMENT SOFTWARE AND DOCUMENTATION CD RoHS:否 制造商:Atollic Inc. 產(chǎn)品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
CDKWM1804-S-1 功能描述:WM1804 - Audio, Audio Processing Evaluation Board 制造商:cirrus logic inc. 系列:- 零件狀態(tài):有效 主要用途:音頻，音頻處理 嵌入式:- 使用的 IC/零件:WM1804 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1
CDKWM1811A-S-1 功能描述:WM1811A - Audio, CODEC Evaluation Board 制造商:cirrus logic inc. 系列:- 零件狀態(tài):有效 主要用途:音頻編解碼器 嵌入式:- 使用的 IC/零件:WM1811A 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1
CDKWM5102-S-1 功能描述:WM5102 - Audio, CODEC Evaluation Board 制造商:cirrus logic inc. 系列:- 零件狀態(tài):有效 主要用途:音頻編解碼器 嵌入式:- 使用的 IC/零件:WM5102 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*