TMP92CZ26A
92CZ26A-315
3.14 Serial Channels (SIO)
TMP92CZ26A includes 1 serial I/O channel (SIO0). For both channels either UART mode
(Asynchronous transmission ) or I/O interface mode (Synchronous transmission) can be selected.
And, SIO0 includes data modulator that supports the IrDA 1.0 infrared data communication
specification.
In mode 1 and mode 2, a parity bit can be added. Mode 3 has a wakeup function for making
the master controller star t slave controllers via a serial link (A multi-controller system).
Figure 3.14.1 is block diagrams for eac h channel.
SIO0 is compounded mainly prescaler, serial clock generation circuit, receiving buffer and
control circuit, transmission buffer and control circuit.
Figure 3.14.1 Data Formats
• I/O interface mode Mode 0: For transmitting and receiving I/O data using
the synchronizing signal SCLK for extending
• UART mode Mode 1: 7-bit data
Mode 2: 8-bit data
Mode 3: 9-bit data
Bit0 1234567
Bit0 123456 Stop
Start
Bit0 12345 Parity Stop
Start 6
Bit0 12345 7 Stop
Start
Bit0 12345 Parity Stop
Start 7
6
6
Bit0 12345 8 Stop
Start
Bit0 12345 Stop
Start Bit8
6
6
7
7
Transfer direction
• Mode 0 (I/O interface mode)
• Mode 1 (7-bit UART mode)
No parity
Parity
No parity
Parity
• Mode 2 (8-bit UART mode)
• Mode 3 (9-bit UART mode)
When bit8 = 1, Address (Select code) is denoted.
When bit8 = 0, Data is denoted.
Wakeup