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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)： | 48/49頁 |
| 文件大?。?/td> | 220K |
| 代理商： | IA8X44 |
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IA8044/IA8344
Data Sheet
SDLC COMMUNICATIONS CONTROLLER
ISSUE:
Port2 buffer bits set high are not actively driven when executing a MOVX A,@Ri or
a MOVX @Ri,A instruction. During these instructions any bit that was driven low
by the previous value on Port2 but is high in the Port2 buffer will not reach a valid
high level before ALE goes low.
SOLUTION: Avoid the use of these instructions or add strong pullups (approximately 10K) to
Port2 externally.
ISSUE:
Race condition on transmit response in AUTO mode causes bad control byte to be
transmitted..
SOLUTION: In firmware wait for RTS=1 before telling transmit to start.
ISSUE:
Device does not sense the end of buffer during a receive.
SOLUTION: No workaround available.
ISSUE:
Receiving continuous flags (7Eh) while in loop mode will not allow a slave device to
transmit. The device is only able to transmit when the line is idle.
SOLUTION: Do not send continuous flags.
Version 00/P01
:
ISSUE:
The following registers change value after an external reset, STAD, TBS, TBL, TCB,
RBS, RBL, RFL, and RCB. These registers should retain there pre-reset values.
SOLUTION: Store register values in memory (internal or external) to be restored after reset.
ISSUE:
Device may miss external interrupts with narrow pulse widths when in edge sensitive
mode and tight software loops that check TCON.
SOLUTION: Place NOPs in loop to allow time to capture interrupt..
ISSUE:
Intermittent drop out in slave mode, followed by normal operation. Dropouts can
be caused by either noise on the reset pin or XTAL1 being unconnected when using
a clock source.
SOLUTION: Filter reset if necessary. Ensure that XTAL1 is tied low when using a clock source.
ISSUE:
When used as a slave in loop mode the device may misinterpret a byte due to an
internal bit counter error. This may cause the device to think it has seen a go-ahead
and can transmit when it actually should not transmit.
SOLUTION: No workaround available.
ISSUE:
If the synchronous mode is used (external SCLK is provided), gating off the SCLK
may cause the device to communicate erratically. Depending on when the SCLK is
gated off the SIU may not have finished its present task. When the SCLK is
restarted the device may not respond to communications.
SOLUTION: Do not gate off the external SCLK.
Copyright
2003
innov
ASIC
The End of Obsolescence
ENG210010112-00
www.innovasic.com
Customer Support:
Page 48 of 49
1-888-824-4184
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IA8X44PDW40I3 | 制造商:INNOVASIC 制造商全稱:INNOVASIC 功能描述:SDLC Communications Controller |
| IA8X44PDW40IR3 | 功能描述:IC MCU 8BIT 12MHZ 40DIP 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 |
| 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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