- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379201 > IA8344-PDW40I-01 (Innovasic Semiconductor) SDLC COMMUNICATIONS CONTROLLER PDF資料下載
參數(shù)資料
| 型號： | IA8344-PDW40I-01 |
| 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： | IA8344-PDW40I-01 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁當(dāng)前第48頁第49頁
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IA8344-PLC44I-01 | SDLC COMMUNICATIONS CONTROLLER |
| IA8X44 | SDLC COMMUNICATIONS CONTROLLER |
| IA82050-PDW28I-01 | ASYNCHRONOUS SERIAL CONTROLLER |
| IA82050-PLC28I-01 | ASYNCHRONOUS SERIAL CONTROLLER |
| IA82050 | ASYNCHRONOUS SERIAL CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IA8344-PLC44I-00 | 制造商:INNOVASIC 制造商全稱:INNOVASIC 功能描述:SDLC COMMUNICATIONS CONTROLLER |
| IA8344-PLC44I-01 | 制造商:INNOVASIC 制造商全稱:INNOVASIC 功能描述:SDLC COMMUNICATIONS CONTROLLER |
| IA85 | 制造商:CELDUC 制造商全稱:celduc-relais 功能描述:REED SWITCH NORMALY OPEN, DRY CONTACT |
| IA85-001 | 制造商:CELDUC 制造商全稱:celduc-relais 功能描述:REED SWITCH NORMALY OPEN, DRY CONTACT |
| IA85072110 | 制造商:CELDUC 制造商全稱:celduc-relais 功能描述:REED SWITCH NORMALY OPEN, DRY CONTACT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。