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| 型號(hào)： | DS31256+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 149/183頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC CTRLR HDLC 256-CHANNEL 256BGA |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 40 |
| 控制器類型： | HDLC 控制器 |
| 接口： | 串行 |
| 電源電壓： | 3 V ~ 3.6 V |
| 電流 - 電源： | 500mA |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 256-BBGA |
| 供應(yīng)商設(shè)備封裝： | 256-BGA（27x27） |
| 包裝： | 管件 |
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DS31256 256-Channel, High-Throughput HDLC Controller
68 of 183
Table 7-B. Receive HDLC Functions
FUNCTION
DESCRIPTION
Zero Destuff
This operation is disabled if the channel is set to transparent mode.
Flag Detection and
Byte Alignment
Okay to have two packets separated by only one flag or by two flags sharing a 0.
This operation is disabled if the channel is set to transparent mode.
Octet Length Check
The minimum check is for 4 Bytes with CRC-16 and 6 Bytes with CRC-32 (packets
with less than the minimum lengths are not passed to the PCI bus).
The maximum check is programmable up to 65,536 Bytes through the RHPL register.
The maximum check can be disabled through the ROLD control bit in the RHCD
register.
The minimum and maximum counts include the FCS.
An error is also reported if a noninteger number of octets occur between flags.
CRC Check
Can be either set to CRC-16 or CRC-32 or none.
The CRC can be passed through to the PCI bus or not.
The CRC check is disabled if the channel is set to transparent mode.
Abort Detection
Checks for seven or more 1s in a row.
Invert Data
All data (including the flags and FCS) is inverted before HDLC processing.
Also available in the transparent mode.
Bit Flip
The first bit received becomes either the LSB (normal mode) or the MSB (telecom
mode) of the byte stored in the FIFO.
Also available in the transparent mode.
Transparent Mode
If enabled, flag detection, zero destuffing, abort detection, length checking, and FCS
checking are disabled.
Data is passed to the PCI bus on octet (i.e., byte) boundaries in channelized operation.
Table 7-C. Transmit HDLC Functions
Zero Stuffing
Only used between opening and closing flags.
Is disabled between a closing flag and an opening flag and for sending aborts and/or
interfill data.
Disabled if the channel is set to the transparent mode.
Interfill Selection
Can be either 7Eh or FFh.
Flag Generation
A programmable number of flags (1 to 16) can be set between packets.
Disabled if the channel is set to the transparent mode.
CRC Generation
Can be either CRC-16 or CRC-32 or none.
Disabled if the channel is set to transparent mode.
Invert Data
All data (including the flags and FCS) is inverted after processing.
Also available in the transparent mode.
Bit Flip
The LSB (normal mode) of the byte from the FIFO becomes the first bit sent or the
MSB (telecom mode) becomes the first bit sent.
Also available in the transparent mode.
Transparent Mode
If enabled, flag generation, zero stuffing, and FCS generation is disabled.
Passes bytes from the PCI Bus to Layer 1 on octet (byte) boundaries.
Invert FCS
When enabled, it inverts all of the bits in the FCS (useful for HDLC testing).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS31256+ | 功能描述:輸入/輸出控制器接口集成電路 256Ch High Thruput HDLC Cntlr RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| DS31256B | 功能描述:輸入/輸出控制器接口集成電路 256Ch High Thruput HDLC Cntlr RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| DS31256DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 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 |
| DS31256-W+ | 制造商:Maxim Integrated Products 功能描述:ENVOY 256 CHANNEL HDLC - WAIVER - Rail/Tube |
| DS312BNC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
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