73S1217F Datasheet, PDF(45/140 Page) Teridian Semiconductor Corporation – Bus-Powered 80515 System-on-Chip with USB, ISO 7816 / EMV, PINpad and More

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

73S1217F Datasheet, PDF (45/140 Pages) Teridian Semiconductor Corporation – Bus-Powered 80515 System-on-Chip with USB, ISO 7816 / EMV, PINpad and More

◁

DS_1217F_002

73S1217F Data Sheet

Transmit and receive data are transferred via this register.

Table 38: The S0CON Register

MSB

SM0 SM1 SM20 REN0 TB80 RB80 TI0

LSB

RI0

Bit

S0CON.7

S0CON.6

S0CON.5

S0CON.4

S0CON.3

S0CON.2

S0CON.1

S0CON.0

Symbol

SM0

SM1

SM20

REN0

TB80

RB80

TI0

RI0

Function

These two bits set the UART0 mode:

Mode

Description SM0

SM1

N/A

8-bit UART

9-bit UART

Enables the inter-processor communication feature.

If set, enables serial reception. Cleared by software to disable reception.

The 9th transmitted data bit in Modes 2 and 3. Set or cleared by the MPU,

depending on the function it performs (parity check, multiprocessor

communication etc.).

In Modes 2 and 3 it is the 9th data bit received. In Mode 1, if SM20 is 0,

RB80 is the stop bit. In Mode 0 this bit is not used. Must be cleared by

software.

Transmit interrupt flag, set by hardware after completion of a serial transfer.

Must be cleared by software.

Receive interrupt flag, set by hardware after completion of a serial

reception. Must be cleared by software.

1.7.6.2 Serial Interface 1

The Serial Interface 1 can operate in 2 modes:

â¢ Mode A

This mode is similar to Mode 2 and 3 of Serial interface 0, 11 bits are transmitted or received: a start

bit (0), 8 data bits (LSB first), a programmable 9th bit, and a stop bit (1). The 9th bit can be used to

control the parity of the serial interface: at transmission, bit TB81 in S1CON is outputted as the 9th

bit, and at receive, the 9th bit affects RB81 in Special Function Register S1CON. The only difference

between Mode 3 and A is that in Mode A only the internal baud rate generator can be use to specify

baud rate.

â¢ Mode B

This mode is similar to Mode 1 of Serial interface 0. Pin RX serves as input, and TX serves as serial

output. No external shift clock is used, 10 bits are transmitted: a start bit (always 0), 8 data bits (LSB

first), and a stop bit (always 1). On receive, a start bit synchronizes the transmission, 8 data bits are

available by reading S1BUF, and stop bit sets the flag RB81 in the Special Function Register

S1CON. In mode 1, the internal baud rate generator is use to specify the baud rate.

The S1BUF register is used to read/write data to/from the serial 1 interface.

Rev. 1.2

▷