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參數(shù)資料
| 型號(hào)： | Q67101-H6773 |
| 廠商： | SIEMENS AG |
| 英文描述： | Replaced by UCC2897A : Current Mode Active Clamp PWM Controller 20-TSSOP -40 to 105 |
| 中文描述： | 聯(lián)合音頻解碼器，編碼器-多模 |
| 文件頁(yè)數(shù)： | 97/272頁(yè) |
| 文件大?。?/td> | 4055K |
| 代理商： | Q67101-H6773 |
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SAB 82532/SAF 82532
Serial Interface (layer-1 functions)
Semiconductor Group
97
07.96
8.5
Modem Control Functions (RTS/CTS, CD)
8.5.1
The ESCC2 provides two pins (RTS, CTS) per serial channel supporting the standard
RTS modem handshaking procedure for transmission control.
A transmit request will be indicated by outputting logical ‘0’ on the request-to-send output
(RTS). It is also possible to control the RTS output by software. After having received the
permission to transmit (CTS) the ESCC2 starts data transmission.
HDLC/SDLC
and
BISYNC:
In the case where permission to transmit is withdrawn in the
course of transmission, the frame is aborted and IDLE is sent. After transmission is
enabled again by re-activation of CTS, and if the beginning of the frame is still available
in the ESCC2, the frame will be re-transmitted (self-recovery). However, if the
permission to transmit is withdrawn after the data in the first XFIFO pool has been
completely transmitted and the pool is released, the transmitter and the XFIFO are reset,
the RTS output is deactivated and an interrupt (XMR) is generated.
Note: For correct identification as to which frame is aborted and thus has to be repeated
after an XMR interrupt has occurred, the contents of XFIFO have to be unique, i.e.
XFIFO should not contain data of more than one frame, which could happen if
transmission of a new frame is started by loading new data in XFIFO and issuing
a transmit command upon reception of XPR interrupt. For this purpose the All Sent
interrupt (ISR1: ALLS) instead of XPR has to be used to trigger the loading of data
(for the next frame) into XFIFO.
RTS/CTS Handshaking
ASYNC:
In the case where permission to transmit is withdrawn, transmission of the
current character is completed. After that, IDLE is sent. After transmission is enabled
again by re-activation of CTS, the next available character is sent out.
Note: In the case where permission to transmit is not required, the CTS input can be
connected directly to
V
SS
.
Additionally, any transition on the CTS input pin will generate an interrupt indicated via
the ISR1 register, if this function is enabled by setting the CSC bit in the IMR1 register.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| Q67101-H6788 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications |
| Q67101-H6789 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications |
| Q67101-H6790 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications |
| Q67101-H6791 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications |
| Q67101-H6864 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Joint Audio Decoder-Encoder for Analog Videophone JADE AN |
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