參數(shù)資料
型號(hào)： TP3420AJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 數(shù)字傳輸電路
英文描述： ISDN S/T Interface Device
中文描述： DATACOM, DIGITAL SLIC, CDIP20
封裝： CERAMIC, DIP-20
文件頁(yè)數(shù)： 30/32頁(yè)
文件大?。?/td> 524K
代理商： TP3420AJ
SC1 Messaging Sequence
(Continued)
Time
(ms)
SC1
Actions Required
I430 Frame Content
(LRS)
0 (MFC INT)
if FL__EXT flag set, do not check for new flags on SC1L, but check for
SC2 channel. Reset FL__EXT. Send SC2 command as appropriate.
SC1L__NB (IDLE)
>
MFT1L
5
10
15
20
25
0 (MFC INT)
(LRS)
(LRS)
(LRS)
(LRS)
(LRS)
(IDLE)
if FL__EXT flag not set, check for new flags on SC1L, assume LB1I.
Check for SC2 channel. Send SC2 command as appropriate.
SC1__NB(IDLE)
>
SC1__PB, SC1 command (LBL1I)
>
SC1__NB,
SC1__NB(LB1I)
>
MFT1L.
5
10
15
20
25
0 (MFC INT)
(IDLE)
(IDLE)
(IDLE)
(IDLE)
(IDLE)
(LB1I)
if FL__EXT flag not set, Check for new flags on SC1L assume LB2I.
Check for SC2 channel. Send SC2 command as appropriate.
SC1__NB(LB1I)
>
SC1__PB, SC1 command(LB2I)
>
SC1__NB,
SC1__NB(LB2I)
>
MFT1L
5
10
15
20
25
0 (MFC INT)
(LB1I)
(LB1I)
(LB1I)
(LB1I)
(LB1I)
(LB2I)
if FL__EXT flag not set, check for new flags on SC1L, assume IDLE.
Check for SC2 channel. Send SC2 command as appropriate.
SC1__NB(LB2I)
>
SC1__PB, SC1 command (IDLE)
>
SC1__NB
SC1__ NB(IDLE)
>
MFT1L.
5
10
15
20
25
0 (MFC INT)
(LB2I)
(LB2I)
(LB2I)
(LB2I)
(LB2I)
(IDLE)
etc.
On the
TE receive side,
the LP, DTSE and FECV messages
are checked once, and for
every occurrence an interrupt
is generated
. The other messages are validated 3 times be-
fore an interrupt is generated. Subsequent repetitions of the
command do not cause an interrupt.
SC2 CHANNEL TRANSMITTER HANDLING
The software should keep a list of flags to indicate SC2 com-
mands as defined in the spec.At the 30 ms tick MFC INT, the
software should scan through the list of flags (top down) and,
seeing the first flag, should write the appropriate command
in the MFT2 register and keep the value in SC2__NB (soft-
ware buffer).
On the
TE receive side
, the SC2 command is verified 3
times before an Interrupt is generated. Subsequent repeti-
tions of the command do not cause an interrupt.
www.national.com
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TP3420AN308 功能描述:IC INTERFACE DEVICE ISDN 20-DIP RoHS:否 類(lèi)別:集成電路 (IC) >> 接口 - 專(zhuān)用 系列:* 標(biāo)準(zhǔn)包裝:3,000 系列:- 應(yīng)用:PDA，便攜式音頻/視頻，智能電話 接口:I²C，2 線串口 電源電壓:1.65 V ~ 3.6 V 封裝/外殼:24-WQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-QFN 裸露焊盤(pán)（4x4） 包裝:帶卷 (TR) 安裝類(lèi)型:表面貼裝 產(chǎn)品目錄頁(yè)面:1015 (CN2011-ZH PDF) 其它名稱(chēng):296-25223-2
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TP3420AV308 功能描述:射頻收發(fā)器 RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類(lèi)型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類(lèi)型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
TP3420AV308/63 功能描述:射頻收發(fā)器 RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類(lèi)型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類(lèi)型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
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