m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 299

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

SERIAL I/O
11.4 Clock asynchronous serial I/O (UART) mode
Fig. 11.4.6 Detect operation of transmit completion
11-44
UART2 transmit interrupt control register (Address F1
Checking start of transmission
UART0 transmit interrupt control register (Address 71
UART1 transmit interrupt control register (Address 73
Checking completion of transmission.
UART0 transmit/receive control register 0 (Address 34
UART1 transmit/receive control register 0 (Address 3C
UART2 transmit/receive control register 0 (Address B4
b7
b7
0
0
Processing at completion of transmission
[When not using interrupts]
b0
b0
Interrupt request bit
Transmit register empty flag
0: No interrupt requested
1: Interrupt requested
0: Transmission is in progress.
1: Transmission is completed.
(Transmission has started.)
7905 Group User’s Manual Rev.1.0
16
16
16
16
16
16
)
)
)
)
)
)
Note: This figure shows the bits and registers required
for processing.
See Figures 11.4.7 to 11.4.9 for the change of
flag state and the occurrence timing of an interrupt
request.
A UARTi transmit interrupt request
occurs when the transmission starts.
[When using interrupts]
UARTi transmit interrupt