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參數(shù)資料
| 型號： | SP504MCM-L |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 22/32頁 |
| 文件大小： | 0K |
| 描述： | IC TXRX WAN MULTI-MODE 80LQFP |
| 標(biāo)準(zhǔn)包裝： | 84 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 7/7 |
| 規(guī)程： | 多協(xié)議 |
| 電源電壓： | 5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 80-LQFP |
| 供應(yīng)商設(shè)備封裝： | 80-LQFP（14x14） |
| 包裝： | 托盤 |
| 其它名稱： | 1016-1682 SP504MCM-L-ND |
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Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP504_02_2708
29
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP504_02_2708
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP504_02_2708
ADDITIONAL TRANSCEIVERS
WITH THE SP504
Serial ports usually can have two data sig-
nals (SD, RD), three clock signals (TT, ST,
RT), and at least eight control signals (CS,
RS, etc.). EIA-RS-449 contains twenty six
signal types for a DB-37 connector. A DB-
37 serial port design may require thirteen
drivers and fourteen receivers. Although
many applications do not use all these
signals, some applications may need to
support extra functions such as diagnostics.
The
SP504 supports enough transceivers
for the primary channels of data, clock and
control signals. Configuring LL, RL and TM
would require two additional drivers and one
receiver if designing for a DTE (one driver
and two receivers for a DCE).
A programmable transceiver such as the
SP332 is a convenient solution in a design
thatrequiresextrasingleendedordifferential
drivers/receivers.As shown in Figure 28, the
SP332 can be configured to four different
variations.
The SP332 in Figure 29 is configured for two
single-ended drivers and one diffferential
receiver. For a DTE design, the two drivers
are used for LL and RL signals and
the receiver is used for the TM signal. This
configuration was selected because the two
RS-232 drivers can be used for RS-423 by
connectingazenerclampingdiodetoground
on the two driver outputs. The diodes will
limit the voltage swing on the outputs so that
the V
OC = ±4V to ±6V adheres to the RS-423
specification. The differential receiver can
be easily configured to RS-423 by ground-
ing the non-inverting input. The receiver will
adhere to the RS-423 specifications.
CIRCUIT
CIRCUIT NAME
CIRCUIT
MNEMONIC
DIRECTION
TYPE
SG
SIGNAL GROUND
--------------
SC
SEND COMMON
TO DCE
RC
RECEIVE COMMON
FROM DCE
IS
TERMINAL IN SERVICE
TO DCE
IC
INCOMING CALL
FROM DCE
TR
TERMINAL READY
TO DCE
DM
DATA MODE
FROM DCE
SD
SEND DATA
TO DCE
RD
RECEIVE DATA
FROM DCE
TT
TERMINAL TIMING
TO DCE
ST
SEND TIMING
FROM DCE
RT
RECEIVE TIMING
FROM DCE
RS
REQUEST TO SEND
TO DCE
CS
CLEAR TO SEND
FROM DCE
RR
RECEIVER READY
FROM DCE
SQ
SIGNAL QUALITY
FROM DCE
NS
NEW SIGNAL
TO DCE
SF
SELECT FREQUENCY
TO DCE
SR
SIGNAL RATE SELECTOR
TO DCE
SI
SIGNAL RATE INDICATOR
FROM DCE
SSD
SECONDARY SEND DATA
TO DCE
SRD
SECONDARY RD
FROM DCE
SRS
SECONDARY RS
TO DCE
SCS
SECONDARY CS
FROM DCE
SRR
SECONDARY RR
FROM DCE
LL
LOCAL LOOPBACK
TO DCE
RL
REMOTE LOOPBACK
TO DCE
TM
TEST MODE
FROM DCE
SS
SELECT STANDBY
TO DCE
SB
STANDBY INDICATOR
FROM DCE
COMMON
CONTROL
DATA
TIMING
CONTROL
DATA
CONTROL
PRIMAR
YCHANNEL
SECONDAR
Y
CHANNEL
RS-449 Interchange Circuits Table
SEL A
0
SEL B
0
0
LOOPBACK
SHUTDOWN
0
Figure 28. Mode selection for the SP332
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP504MCM-L/TR | 功能描述:LIN 收發(fā)器 WAN Multi-Mode Serial Transceiver RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8 |
| SP505 | 制造商:EXAR 制造商全稱:EXAR 功能描述:WAN Multi-Mode Serial Transceiver |
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| SP5054KGDPAS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.6GHz 3-Wire BUS Controlled Synthesiser |
| SP5054SKGMPAS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.6GHz 3-Wire BUS Controlled Synthesiser |
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