參數(shù)資料
型號(hào)： SC16C754B
廠商： NXP Semiconductors N.V.
英文描述： 5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
中文描述： 5伏，3.3伏和2.5伏兆5四異步/秒（最大）64字節(jié)的FIFO
文件頁(yè)數(shù)： 28/50頁(yè)
文件大?。?/td> 259K
代理商： SC16C754B
9397 750 14668
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 13 June 2005
28 of 50
Philips Semiconductors
SC16C754B
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
7.7 Modem Status Register (MSR)
This 8-bit register provides information about the current state of the control lines from the
modem, data set, or peripheral device to the processor. It also indicates when a control
input from the modem changes state.
Table 15
shows Modem Status Register bit settings
per channel.
[1]
The primary inputs RI, CD, CTS, DSR are all active LOW, but their registered equivalents in the MSR and
MCR (in loop-back) registers are active HIGH.
Table 15:
Bit
7
Modem Status Register bits description
Symbol
Description
MSR[7]
[1]
CD (active HIGH, logical 1). This bit is the complement of the CD input
during normal mode. During internal loop-back mode, it is equivalent to
MCR[3].
MSR[6]
[1]
RI (active HIGH, logical 1). This bit is the complement of the RI input during
normal mode. During internal loop-back mode, it is equivalent to MCR[2].
MSR[5]
[1]
DSR (active HIGH, logical 1). This bit is the complement of the DSR input
during normal mode. During internal loop-back mode, it is equivalent
MCR[0].
MSR[4]
[1]
CTS (active HIGH, logical 1). This bit is the complement of the CTS input
during normal mode. During internal loop-back mode, it is equivalent to
MCR[1].
MSR[3]
CD. Indicates that CD input (or MCR[3] in loop-back mode) has changed
state. Cleared on a read.
MSR[2]
RI. Indicates that RI input (or MCR[2] in loop-back mode) has changed
state from LOW to HIGH. Cleared on a read.
MSR[1]
DSR. Indicates that DSR input (or MCR[0] in loop-back mode) has changed
state. Cleared on a read.
MSR[0]
CTS. Indicates that CTS input (or MCR[1] in loop-back mode) has changed
state. Cleared on a read.
6
5
4
3
2
1
0
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參數(shù)描述
SC16C754BIA68 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH UART 64B FIFO 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
SC16C754BIA68,512 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH 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
SC16C754BIA68,518 功能描述:UART 接口集成電路 4CH. UART 64B FIFO 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
SC16C754BIA68,529 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH 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
SC16C754BIA68512 制造商:NXP Semiconductors 功能描述:IC QUAD UART FIFO 5MBPS 5.5V LCC-68
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