Toshiba TLCS-900/H1 Series Manual page 159

Original cmos 32-bit microcontroller

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Serial Channels

The TMP92CH21 includes 2 serial I/O channels. For each channel, either UART mode

(asynchronous transmission) or I/O interface mode (synchronous transmission) can be selected.

I/O interface mode

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 3.9.2, Figure 3.9.3 are block diagrams for each channel.

Each channel can be used independently.

Each channel operates in the same fashion except for the following points; hence only the

operation of channel 0 is explained below.

This chapter contains the following sections:

3.9.1 Block diagram

3.9.2 Operation of each circuit

3.9.4 Operation in each mode

3.9.5 Support for IrDA mode

Table 3.9.1 Differences between Channels 0 to 1

TXD0 (P90 or PF0)

RXD0 (P91 or PF1)

(P92 or PF2)

For transmitting and receiving I/O data using the

synchronizing signal SCLK for extending I/O.

, SCLK1 (PF2)

Tmp92ch21fg Jtmp92ch21