TMP91C829 Datasheet, PDF (117/204 Pages) Toshiba Semiconductor – Original CMOS 16-Bit Microcontroller

TMP91C829
3.10 Serial Channel
TMP91C829 includes one serial I/O channel. Either UART mode (Asynchronous
transmission) or I/O interface mode (Synchronous transmission) can be selected.
• I/O interface mode
Mode 0: For transmitting and receiving I/O data using the
synchronizing signal SCLK for extending I/O.
• UART mode
Mode 1: 7-bit data
Mode 2: 8-bit data
Mode 3: 9-bit data
In mode 1 and mode 2 a parity bit can be added. Mode 3 has a wakeup function for making the
master controller start slave controllers via a serial link (A multi-controller system).
Figure 3.10.2 and Figure 3.10.3 are block diagrams.
Pin Name
Table 3.10.1 Channels 0 and 1
Channel 0
Channel 1
TXD0 (P80)
RXD0 (P81)
CTS0 /SCLK0 (P82)
STS0 (P83)
TXD1 (P84)
RXD1 (P85)
CTS0 /SCLK1 (P86)
STS1 (P87)
• Mode 0 (I/O interface mode)
Bit0 1
23
4
Transfer direction
• Mode 1 (7-bit UART mode)
No parity
Start Bit0 1
2
3
56
7
4
5 6 Stop
Parity
Start Bit0 1
23
4
5 6 Parity Stop
• Mode 2 (8-bit UART mode)
No parity
Start Bit0 1
23
4
5 6 7 Stop
Parity
Start Bit0 1
23
4
5 6 7 ^{Parity Stop}
• Mode 3 (9-bit UART mode)
Start Bit0 1
23
4
567
8 Stop
Wakeup function ^{Start Bit0 1}
23
4
567
When Bit8 = 1, address (Select code) is denoted.
When Bit8 = 0, data is denoted.
Bit8 Stop
Figure 3.10.1 Data Formats
91C829-115
2006-03-15