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| 型號： | SI2494-A-FM |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 50/70頁 |
| 文件大小： | 0K |
| 描述： | IC ISOMODEM 56KBPS 38-QFN |
| 標準包裝： | 364 |
| 系列： | * |
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Si2494/39
54
Rev. 1.0
6. User-Access Registers (U-Registers)
U-Registers are 16-bit registers written by the AT:Uaa command and read by the AT:R (read all U-Registers) or
AT:Raa (read U-Register aa) commands (see the AT command list in Table 13 on page 46). Many aspects of the
modem’s and DAA’s behavior can be enabled/disabled, configured, monitored, and/or modified through U-
Registers; however, most of them will not be needed in normal use.
There are two types of U-Registers. The first represents a single 16-bit term, such as a filter coefficient, threshold,
delay, or other quantity. These registers can be read from or written to as a single 16-bit value. The second type of
U-Register is bit-mapped. Bit-mapped registers are written and/or read in hexadecimal, but each bit or combination
of bits in the register represents an independent value or status information. These individual bits are used to
enable or disable features and indicate states.
Some U-Registers are reserved and not available to the user. Therefore, there are gaps in the available U-Register
address map. Additionally, some bits within available U-Registers are reserved. Any attempt to write a non-zero
value to a reserved U-Register or bit may cause unpredictable modem operation.
With over 100 U-Registers, the Si2494/39 offers an unprecedented level of programmability for a controller-based
modem. A detailed list of these registers and their use is beyond the scope of this data sheet. Refer to “AN93:
ISOmodem Chipset Family Designer’s Guide” for details.
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| Si2494-A-FM18-EVB | 功能描述:網(wǎng)絡開發(fā)工具 38pin Si2494+ Si3018 ISOmodem 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 |
| SI2494-A-FMR | 制造商:Silicon Laboratories Inc 功能描述:56 KBPS, V.92 ISOMODEM +VOICE SYSTEM-SIDE - LEAD-FREE - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC ISOMODEM 56KBPS 38-QFN 制造商:Silicon Laboratories Inc 功能描述:56KBPS V.92 ISOMODEM |
| SI2494-A-GM | 功能描述:IC ISOMODEM 56KBPS 38-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 調(diào)制解調(diào)器 - IC 和模塊 系列:* 標準包裝:25 系列:- 數(shù)據(jù)格式:V.21，V.22，V.23，V.29，V.32，V.34，V.90，V.92，Bell 103，Bell 212A 波特率:33.6k 電源電壓:3.3V 安裝類型:- 封裝/外殼:- 供應商設備封裝:- 包裝:托盤 配用:591-1013-ND - KIT DEV SOCKETMODEM PARALLEL591-1009-ND - KIT DEV SRL SOCKETMODEM UNIVERSL 其它名稱:MT5656SMI-P-V-34.R2-SPMT5656SMI-P-V-34.R2-SP-NDQ4711574 |
| SI2494-A-GMR | 制造商:Silicon Laboratories Inc 功能描述:56 KBPS, V.92 ISOMODEM +VOICE SYSTEM-SIDE - LEAD-FREE - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC ISOMODEM 56KBPS 38-QFN |
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