參數(shù)資料
型號(hào)： TP3420AN
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, PDIP20
封裝： PLASTIC, DIP-20
文件頁(yè)數(shù)： 13/32頁(yè)
文件大?。?/td> 524K
代理商： TP3420AN
Functional Description
(Continued)
a packet in the D channel, a received E bit does
not match the last transmitted D bit, indicating a
lost collision.
This interrupt indicates that the interface has been
successfully Activated in response to an Activation
Request.
Set when loss of frame alignment is detected.
If set, indicates that the interface has been Deacti-
vated.
This interrupt indicates when the Multiframe
SC1/Q channel data buffer requires servicing, see
Multiframe Maintenance section. The MID1 com-
mand disables this interrupt.
This interrupt indicates when the Multiframe SC2
channel data buffer requires servicing, see Multi-
frame Maintenance section. The MID2 command
disables this interrupt.
This status interrupt provides a transmit multiframe
clock. It can be selected to occur on every multi-
frame boundary (5 ms) by the MFC1E command
or on each 6 multiframe boundary (30 ms) by the
MFC6E command. This interrupt can be used to
synchronize the SC1/Q and SC2 multiframe trans-
mit messages.
A bipolar Violation or DC balance error causes this
Receive Multiframe Error Interrupt in both NT and
TE modes. At the NT end, upon receiving the
RMFE interrupt, the local microcontroller must in-
form the TEs with a FECV message (via the
MFT1H register). The NT or the TE end can keep
a count of RMFE interrupts to monitor the line
block error rate at its receiver.
This interrupt indicates if the clock phase shift in
the jitter/wander buffers exceeded the phase shift
limit and changed the internal data buffer delay to
accommodate it. One interrupt is generated and is
coded as X’09 for Tx buffer slip: X’0A for Rx buffer
slip: and X’0B for both Tx and Rx buffer slip.
This NOC status is returned for every command
when there is no change of status to be reported.
It is read in the power-up default state and after the
DISST command. No interrupt is generated.
NOCST This status response occurs only after the ENST
command. The NOCST status is returned in re-
sponse to any subsequent command when there
is no status change that needs to be reported with
an interrupt. It contains the device activation state
information, see the section on Activation State
machine access.
AI
EI
DI
MFR1
MFR2
MFC
RMFE
SLIP
NOC
CONTROL REGISTER INSTRUCTIONS
ACTIVATION/DEACTIVATION
PUP This power-up command enables all analog circuitry,
starts the XTAL and resets the state machines to the
de-activated state, i.e. transmitting INFO 0 (no signal).
It also inhibits the LSD output.
PDN This power-down command immediately forces the
device to a low power state, without sequencing
through any of the de-activation states. It should
therefore only be used after the TP3420A has been
put in a known state, e.g. in a TE after a DI status in-
dication has been reported. It also enables the LSD
circuit.
Activation Request initiates the specified Activation
sequence. It is recommended that an AR be delayed
at least 2 ms after the device is powered-up using the
PUP command.
Deactivation
Request,
which
through the appropriate deactivation sequence speci-
fied in I.430. Should be used at the NT end only.
Effective only in NT modes, and only after Activation
has been completed, this instruction forces the NT to
transmit INFO 2 frames instead of INFO 4, normally to
allow testing at the U interface. Provided INFO 3 is still
being received from the TE(s), an AP Status Interrupt
will be generated and loop synchronization main-
tained, but 2B+D transmission is inhibited. To restore
full loop activation, with the NT sending INFO 4, anAR
command is required in the normal way.
MMA Intended for test equipment applications, this instruc-
tion allows the receive line interface (Li
±
) to be con-
nected to the TE-to-NT direction twisted pair and to
activate on the received INFO 3 signals while being
the master of the DSI. The received 2B+D can then be
passively monitored (the line transmit output Lo
±
would not be connected). TE Master mode must be
selected first (TEM).
AR
DR
forces
the
device
FI2
DEVICE MODES
NTA NT Mode, Adaptive Sampling should be selected
when the device is in an NT on any wiring configura-
tion up to the maximum specified length for operation.
Multiple terminals, if required, must be grouped within
approximately 100 meters of each other (depending
on cable capacitance, see I.430). The Digital System
Interface is a slave to external BCLK and FS sources.
NTF NT Mode Fixed Sampling may be selected when the
device is in an NT on a passive bus wiring configura-
tion up to approximately 200 meters in length (de-
pending on cable type). In this mode the receiver
DPLL is disabled and sampling of the received sym-
bols is fixed, to enable multiple terminals (nominally
up to 8) to be connected anywhere along the passive
bus. Again, the DSI is a slave to external BCLK and
FS sources.
TEM TE Mode DSI Master should be selected when the de-
vice is in a TE. The TP3420A is then the source of the
BCLK and FS signals, and access to the Transmit D
channel, including the priority and contention resolu-
tion control, is enabled as described in the section on
TE Mode D-Channel Access.
TES TE
Mode
DSI
Slave,
“Slave-slave” mode, should be selected when the de-
vice is used on the T-interface side of an NT-2. The
TP3420A System Interface is then driven by BCLK
and FS sources in the NT-2. Data buffers and a clock
re-synchronizer enable this interface to function with
jittering sources for BCLK and FS. All D Channel ac-
cess control circuitry is disabled, i.e. D Channel data
at the Bx input is continuously transmitted to the line;
there is no monitoring of the D-echo channel from the
network direction, and DREQ instructions are ignored.
Also, the SCLK function is enabled at the DEN
x
/SCLK
pin.
otherwise
known
as
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相關(guān)PDF資料
PDF描述
TP3420AV ISDN S/T Interface Device
TP3464 MICROWIRE⑩ Interface Device (MID)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
TP3420AV 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:ISDN S/T Interface Device
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
TP3420AV308/63SN 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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