tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 401

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Transmit Counter
Transmit Control Unit
Serial Channel (HSIO)
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The transmit counter is a 4-bit binary counter used in the asynchronous communication (UART) mode.
It is counted by SIOCLK as in the case of the receive counter and generates a transmit clock
(TXDCLK) on every 16th clock pulse.
TXDCLK
SIOCLK
I/O interface mode:
Asynchronous (UART) mode:
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In the HSCLK output mode with HC0CR <IOC> set to "0," each bit of data in the send buffer
is output to the HTXD0 pin on the rising edge of the shift clock output from the HSCLK0 pin.
In the HSCLK input mode with HC0CR <IOC> set to "1," each bit of data in the send buffer
is output to the HTXD0 pin on the rising or falling edge of the input HSCLK signal according
to the HC0CR <HSCLKS> setting.
When the CPU writes data to the send buffer, data transmission is initiated on the rising edge
of the next HTXDCLK and the transmit shift clock (HTXDSFT) is also generated.
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Fig. 15-5 Transmit Clock Generation
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TMP19A44(rev1.3) 15-11
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TMP19A44
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2010-04-01
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