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參數(shù)資料
| 型號(hào)： | XR17C158 |
| 廠商： | Exar Corporation |
| 英文描述： | PCI Bus Octal UART(八通用異步接收器/發(fā)送器（滿足通訊系統(tǒng)中PCI總線和高帶寬要求）) |
| 中文描述： | PCI總線八路的UART（八通用異步接收器/發(fā)送器（滿足通訊系統(tǒng)中的PCI總線和高帶寬要求）） |
| 文件頁數(shù)： | 23/51頁 |
| 文件大小： | 685K |
| 代理商： | XR17C158 |
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XR17C158
PCI BUS OCTAL UART
PRELIMINARY
REV. 1.0.0
23
4.2
A
UTOMATIC
H
ARDWARE
(RTS/CTS
OR
DTR/
DSR) F
LOW
C
ONTROL
O
PERATION
Automatic hardware or RTS/DTR and CTS/DSR flow
control is used to prevent data overrun to the local re-
ceiver FIFO and remote receiver FIFO. The RTS#/
DTR# output pin is used to request remote unit to
suspend/restart data transmission while the CTS#/
DSR# input pin is monitored to suspend/restart local
transmitter. The auto RTS/DTR and auto CTS/DSR
flow control features are individually selected to fit
specific application requirement and enabled through
EFR bit-6 and 7 and MCR bit-2 for eiher RTS/CTS or
DTR/DSR control signals. The auto RTS/DTR func-
tion must be started by asserting RTS/DTR# output
pin (MCR bit-0 or 1 to logic 1 after it is enabled.
Figure 9
below explains how it works.
Two interrupts associated with RTS/DTR and CTS/
DSR flow control have been added to give indication
when RTS/DTR# pin or CTS/DSR# pin is de-asserted
during operation. The RTS/DTR and CTS/DSR inter-
rupts must be first enabled by EFR bit-4, and then en-
abled individually by IER bit-6 and 7, and chosen with
MCR bit-2.
Automatic hardware flow control is selected by setting
bits 6 (RTS) and 7 (CTS) of the EFR register to logic
1. If CTS# pin transitions from logic 0 to logic 1 indict-
ing a flow control request, ISR bit-5 will be set to logic
1, (if enabled via IER bit 6-7), and the UART will sus-
pend TX transmissions as soon as the stop bit of the
character in process is shifted out. Transmission is
resumed after the CTS# input returns to logic 0, indi-
cating more data may be sent.
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| XR17D152IM | UNIVERSAL (3.3V AND 5V) PCI BUS DUAL UART |
| XR17D158IV | UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART |
| XR17D158 | UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR17C158CV | 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| XR17C158CV-0A-EVB | 功能描述:UART 接口集成電路 Supports C158 144 ld TQFP, PCI Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| XR17C158CV-F | 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| XR17C158CVTR-F | 制造商:Exar Corporation 功能描述:UART 8-CH 64Byte FIFO 5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17C158CVTR-F |
| XR17C158IV | 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
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