參數(shù)資料
型號(hào)： SI2401FS08-EVB
廠商： Silicon Laboratories Inc
文件頁(yè)數(shù)： 16/76頁(yè)
文件大?。?/td> 0K
描述： BOARD EVAL SI2401 + SI3008
標(biāo)準(zhǔn)包裝： 1
系列： ISOmodem®
主要目的： 電信，數(shù)據(jù)采集裝置（DAA）
已用 IC / 零件： SI2401
已供物品： 板，CD
Si2401
Rev. 1.0
23
4.9. Fast Connect
In modem applications that require fast connection
times, it is possible to reduce the length of the
handshake.
Additional modem handshaking control can be adjusted
through the registers shown in Table 11. These registers
are most useful if the user has control of both the
originating and answering modems.
When the fast connect settings are used, there may be
unintended data received initially. The host must
tolerate these bytes.
4.10. Clock Generation Subsystem
The Si2401 contains an on-chip clock generator. Using
a single master clock input, the Si2401 can generate all
modem sample rates necessary to support V.22bis,
V.22/Bell212A, and V.21/Bell103 standards and a
9.6 kHz rate for audio playback. Either a 27 MHz or
4.9152 MHz clock on XTALI or a 4.9152 MHz crystal
across XTALI and XTALO form the master clock for the
Si2401. This clock source is sent to an internal phase-
locked loop (PLL) that generates all necessary internal
system clocks. The PLL has a settling time of ~1 ms.
Data on RXD should not be sent to the device prior to
settling of the PLL. By default, the Si2401 assumes a
4.9152 MHz clock input. If a 27 MHz clock on XTALI is
used, a pulldown resistor <10 k
Ω must be placed
between GPIO4 (Si2401, pin 11) and GND.
Table 11. V.22/Bell212 Handshaking Control Registers
Register
Name
Function
Units
Default
Fast
Connect
S1E
TATL
Transmit Answer Tone Length
1 s
0x03
00
S1F
ATTD
Answer Tone to Transmit Delay
5/3 ms
0x2D
00
S20
UNL
Unscrambled Ones Length—V.22
5/3 ms
0x5D
00
S21
TSOD
Transmit Scrambled Ones Delay—V.22
53.3 ms
0x09
00
S22
TSOL
Transmit Scrambled Ones Length—V.22
5/3 ms
0xA2
00
S23
VDDL
V.22/22b Data Delay Low
5/3 ms
0xCB
00
S24
VDDH
V.22/22b Data Delay High
(256) 5/3 ms
0x08
00
S34
TASL
Answer Tone Length
(only used in S1E [TATL] = 0x00)
5/3 ms
0x5A
F0
S35
RSOL
Receive V.22 Scrambled Ones Length
5/3 ms
0xA2
00
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參數(shù)描述
SI2401FS10-EVB 功能描述:網(wǎng)絡(luò)開發(fā)工具 SI2401+SI3010 ISO MODEM EVAL. BOARD RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
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SI2401URT-EVB 功能描述:網(wǎng)絡(luò)開發(fā)工具 U 634-SI2401FS10-EVB RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
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SI2403-FT 制造商:Silicon Laboratories Inc 功能描述:MODEM CHIP CHIPSET ISOMODEM 2.4KBPS 24TSSOP - Rail/Tube
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