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参数资料
| 型号： | IA82510-PLC28I |
| 厂商： | Innovasic Semiconductor |
| 英文描述： | 22 OHM,5%,1/4W,1210 |
| 中文描述： | 异步串行控制器 |
| 文件页数： | 14/14页 |
| 文件大小： | 76K |
| 代理商： | IA82510-PLC28I |
IA82510
ASYNCHRONOUS SERIAL CONTROLLER
6. Problem: Receiving streamed data has many framing errors at fast baud rates (divisor=6)
through bad modem lines.
Analysis: DPLL is not robust for RXD signal with more than 1/16 bit time of variation.
Workaround: None
7. Problem: Difficulty starting oscillator with crystal.
Analysis: No internal feedback resistor between X1 and X2.
Workaround: Install external 1-10Mohm resistor
8. Problem: Intermittent and temperature sensitive crystal oscillator operation when cycling
power.
Analysis: Strapping state elements apparently transparent latches instead of flip flops. If flip
flop powers up to wrong state, crystal oscillator is disabled while reset is active. OK after first
reset following power-up.
Workaround: None
9. Problem: Auto-acknowledge of interrupts via writing of LSR does not work.
Analysis: Writing LSR directly sets/resets bits 4 through 0. Also writing 0 to LSR(0) – RX
FIFO – clears the RX FIFO level as seen by FLR. Writing zero to any other LSR bits clears the
corresponding LSR/RST flag, but also corrupts the FIFO location the write pointer is set to,
then increments both the write and read pointers.
Workaround: Use other means to service interrupts, such as read of RST or RXD
10. Problem: ICM Status Clear command does not clear LSR/RST overrun error
Analysis: ICM Status Clear command should clear everything in RST/LSR, MSR, and TMST
except RST/LSR(0). Overrun error was missed.
Workaround: Use other means to service interrupts
11. Problem: In semi-automatic/uLAN mode, the RX FIFO is only opened when an address
character matches the ACR1 or ACR0 registers (like full auto mode).
Analysis: In semi-auto mode, the RX FIFO should open on any address character.
Workaround: None
12. Problem: Device fails to reset interrupt signal in auto acknowledge mode when character is
read from RX FIFO.
Analysis: RD strobe is outside the CS enable, which is outside of the Intel datasheet, but
apparently still works in the Intel device. Such a bus cycle allows the read data out, but fails to
generate the necessary internal strobe to change pointers. The same problem is found on write
accesses.
Workaround: Force bus interface to bracket RD strobe inside the CS enable
Data Sheet
As of Production Ver. 01
Copyright
2001
innov
ASIC
The End of Obsolescence
ENG211001219-01
www.innovasic.com
Customer Support:
Page 14 of 14
1-888-824-4184
相关PDF资料 |
PDF描述 |
|---|---|
| IA82510-PDW28I | ASYNCHRONOUS SERIAL CONTROLLER |
| IA82527 | Serial Communications Controller CAN Protocol |
| IA82527-PLC44A | Serial Communications Controller CAN Protocol |
| IA82527-PLC44A-R | Serial Communications Controller CAN Protocol |
| IA82527-PTQ44A | Serial Communications Controller CAN Protocol |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IA82510-PLC28I-00 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Controller Miscellaneous - Datasheet Reference |
| IA82510-PLC28I-01 | 制造商:INNOVASIC 制造商全称:INNOVASIC 功能描述:ASYNCHRONOUS SERIAL CONTROLLER |
| IA82510PLC28IR2 | 制造商:INNOVASIC SEMICONDUCTOR 功能描述:IC ASYNCHRONOUS SERIAL CTRL 制造商:INNOVASIC 功能描述:IA82510 5.5 V Asynchronous Serial Controller - PLCC-28 |
| IA8251-PDW28C | 制造商:INNOVASIC 制造商全称:INNOVASIC 功能描述:Programmable Communication Interface |
| IA8251-PDW28I | 制造商:INNOVASIC 制造商全称:INNOVASIC 功能描述:Programmable Communication Interface |
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