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TMP93CS44 bảng dữ liệu(PDF) 139 Page - Toshiba Semiconductor

tên linh kiện TMP93CS44
Giải thích chi tiết về linh kiện  CMOS 16-Bit Microcontroller
PDF  224 Pages
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nhà sản xuất  TOSHIBA [Toshiba Semiconductor]
Trang chủ  http://www.semicon.toshiba.co.jp/eng
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TMP93CS44 bảng dữ liệu(HTML) 139 Page - Toshiba Semiconductor

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TMP93CS44/S45
2004-02-10
93CS44-137
Handshake function
The serial channels use the CTS0 pin to transmit data in units of frames, thus
preventing an overrun error. Use SC0MOD<CTSE0> to enable or disable the
handshake function.
When CTS0 goes high, data transmission is halted after the completion of the
current transmission and is not restarted until CTS0 returns to low. An INTTX0
interrupt is generated to request the CPU for the next data to transmit. When the CPU
write the data to the transmit buffer, processing enters standby mode.
An RTS pin is not provided, but a handshake function can easily be configured if the
receiver sets any port assigned to the RTS function to high (in the receive interrupt
routine) after data receive, and requests the transmitter to temporarily halt
transmission.
Figure 3.9.13 Handshake Function
Note 1:
If the CTS signal rises during transmission, the next data is not sent after the completion of the current
transmission.
Note 2:
Transmission starts at the first TXDCLK clock fall after the CTS signal falls.
Figure 3.9.14 Timing of CTS (Clear to send)
TXD
CTS
RXD
RTS
(Any port)
TMP93CS44/S45
TMP93CS44/S45
Sender
Receiver
Timing to write
Transmission buffer
3
13
14
15
16
1
2
SIOCLK
3
14
15
16
1
2
Start bit
Bit0
Note 1
Note 2
Send is suspended
CTS0
TXDCLK
TXD
4



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