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參數(shù)資料
| 型號： | IA8X44 |
| 廠商： | Innovasic Semiconductor |
| 英文描述： | SDLC COMMUNICATIONS CONTROLLER |
| 中文描述： | SDLC的通信控制器 |
| 文件頁數(shù)： | 37/49頁 |
| 文件大?。?/td> | 220K |
| 代理商： | IA8X44 |
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IA8044/IA8344
Data Sheet
SDLC COMMUNICATIONS CONTROLLER
Bit and Byte Processors
Copyright
2003
innov
ASIC
The End of Obsolescence
ENG210010112-00
www.innovasic.com
Customer Support:
Page 37 of 49
1-888-824-4184
BIP
The BIP consists of the DPLL, NRZI encoder/decoder, serial/parallel shifter, zero
insertion/deletion, shutoff logic and FCS generation/checking. The NRZI logic compares the
current bit to the previous bit to determine if the bit should be inverted. The serial shifter converts
the outgoing byte data to bit data and incoming bit data to byte data. The zero insert/delete
circuitry inserts and deletes zeros and also detects flags(01111110), go-aheads (GA) (01111111) and
aborts (1111111). The pattern 1111110 is detected as an early go-ahead that can be turned into a
flag in loop configurations. The shutoff detector is a three bit counter that is used to detect a
sequence of eight zeros, which is the shutoff command in loop mode transmissions. It is cleared
whenever a one is detected. The FCS logic performs the generation and checking of the FCS value
according to the polynomial described above. The FCS register is set to all 1’s prior to each
calculation. If a CRC error is generated on a receive frame the SIU will not interrupt the CPU and
the error will be cleared upon receiving an opening flag.
BYP
The BYP contains registers and controllers used to perform the manipulations required for SDLC
communications. The BYP registers may be accessed by the CPU (see SFR section above). The
BYP contains the SIU state machine that controls transmission and reception of frames.
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| IA8X44PDW40I3 | 制造商:INNOVASIC 制造商全稱:INNOVASIC 功能描述:SDLC Communications Controller |
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| IA8X44PLC44I3 | 制造商:Innovasic Inc 功能描述:5 V Serial Interface SDLC Communications Controller - PLCC-44 |
| IA8X44PLC44IR3 | 功能描述:IC MCU 8BIT 12MHZ 44PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:- 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng)，UART，USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382 |
| IA8X44-PLC44I-R-P03 | 制造商:INNOVASIC 制造商全稱:INNOVASIC 功能描述:SDLC Communications Controller |
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