- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄380765 > STLC5411P (意法半導體) 2B1Q U INTERFACE DEVICE PDF資料下載
參數(shù)資料
| 型號： | STLC5411P |
| 廠商： | 意法半導體 |
| 英文描述： | 2B1Q U INTERFACE DEVICE |
| 中文描述： | 2B1Q U接口裝置 |
| 文件頁數(shù)： | 22/72頁 |
| 文件大小： | 739K |
| 代理商： | STLC5411P |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁
Monitor channel
The Monitor channel is used to write and read all
STLC5411 internal registers. Protocol on the
Monitor channel allows a bidirectional transfer of
bytes between UID and a control unit with ac-
knowledgement at each received byte. Bytes are
transmitted on the Br output and received on the
Bx input in the Monitor channel time slot.
A write or read cycle is always constituted of two
bytes.(seefig. 5). It is possible to operate several
write or read cycles within a single monitor mes-
sage.
Note:
Special format is used for EOC channel.
Writecycle
The format to write a message into the UID is:
A7
A6
A5
A4
1st byte
A3
A2
A1
A0
D7
D6
D5
D4
2nd byte
D3
D2
D1
D0
A7-A1:
A0:
D7-D0:
Register Address
Write/Read back Indicator
Register Content
After the first byte is shifted in, Register address
is decoded. A0 set low indicatesa write cycle: the
content of the following received byte has to be
loadedinto theaddressed register.
A0 set high indicates a read-back cycle request.
the second byte content is not significative.
STLC5411 will respond to the request by sending
back a message with the register content associ-
ated with its own address. It is then possible for
the microprocessor to receive the required regis-
ter content after several other pending messages.
To avoid any loss of data, it is recommended to
operateonly one read-backrequest at a time.
Note:
Special format is used for EOC channel.
Readcycle
When UID has a register content to send to the
controller, it send it on the monitor channel di-
rectly. Note that the data to send can be the con-
tent of a Register previously requested by the
controllerby meansof aread-backrequest.
The format of the message sent by the UID is:
A7
A6
A5
A4
1st byte
A3
A2
A1
A0
D7
D6
D5
D4
2nd byte
D3
D2
D1
D0
A7-A1:
A0:
D7-D0:
Register Address
forced to 0is spontaneous
interrupt, forced to 1 if read-
back
Register Content
Exchange Protocol
STLC5411 validates a received byte if it is de-
tectedtwo consecutivetimes identical. (see fig. 5)
The exchange protocol is identical for both direc-
tions. The sender uses the E bit to indicate that it
is sending a Monitor byte while the receiver uses
A bit to acknowledge the received byte.When no
message is transferred, E bit and A bit are forced
to inactivestate.
A transmission is started by the sender (Transmit
section of the Monitor channel protocol handler)
by putting the E bit from inactive to active state
and by sending the first byte on Monitor channel
in the same frame. Transmission of a messageis
allowed only if A bit sent from the receiver has
been set inactive for at least two consecutive
frames. When the receiver is ready, it validates
the incoming byte when received identical in two
consecutive frames. Then, the receiver set A bit
from the inactive to the active state (preacknowl-
edgement) and maintain active at least in the fol-
lowing frame (acknowledgement).
If validation is not possible (two last bytes re-
ceived are not identical) the receiver aborts the
message by setting the A bit active for only a sin-
gle frame.Thesecond byte can be transmitted by
the sender putting the E bit from the active to the
inactive state and sending the secondbyte on the
Monitor channel in the same frame . The E bit is
set inactive for only one frame. If it remains inac-
tive more than one frame, it is an end of mes-
sage. The second byte may be transmitted only
after receiving of the pre-acknowledgementof the
previous byte . Each byte has to be transmittedat
least intwo consecutiveframes.
The receiver validates the current received byte
as for the first one and then set the A bit in the
next two frames first from the active state to the
inactive state (pre-acknowledgement)and back to
the active (acknowledgement). If thereceiver can-
not validates the received current byte (two bytes
received not identical)it pre-acknowledges nor-
mally but let the A bit in the inactive state in the
next frame which indicates an abort request . If a
message sent by the UID is aborted, the UID will
send again the complete message until receiving
of an acknowledgement . A message received by
the UID can be acknowledged or aborted with
flow Control.
The most significant bit (MSB) of Monitor byte is
sent first on the Monitor channel. E & A bits are
active low and inactive state on Br is 5 V. When
no byte is transmitted, Monitor channel time slot
STLC5411
22/72
相關PDF資料 |
PDF描述 |
|---|---|
| STLC5411 | 2B1Q U Interface Device(2BIQ U接口裝置) |
| STLC5412 | 2B1Q U INTERFACE DEVICE ENHANCED WITH DECT MODE |
| STLC5412FN | 2B1Q U INTERFACE DEVICE ENHANCED WITH DECT MODE |
| STLC5412P | 2B1Q U INTERFACE DEVICE ENHANCED WITH DECT MODE |
| STLC5444 | Quad Feed Power Supply(ISDN四饋電電源) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| STLC5412 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2B1Q U INTERFACE DEVICE ENHANCED WITH DECT MODE |
| STLC5412FN | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2B1Q U INTERFACE DEVICE ENHANCED WITH DECT MODE |
| STLC5412P | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2B1Q U INTERFACE DEVICE ENHANCED WITH DECT MODE |
| STLC54155 | 功能描述:電信集成電路 155MBit Coaxial Intr RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| STLC5432 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2Mbit CEPT & PRIMARY RATE CONTROLLER DEVICE |
發(fā)布緊急采購，3分鐘左右您將得到回復。