Sun Microsystems S16A User Manual

S16A User’s Guide

Registers

EDT, Inc.  October, 1996

35

The clock prescale registers are written by sending a four-byte sequence beginning with W or w.

Write an 8-bit value to a Clock Prescale register.

Number of the Clock Prescale register to be written. 0 is input channel 0;
1 is input channel 1.

Hexadecimal value to write to the register.

The UART responds with the four-character sequence return linefeed > space.

The input configuration registers are written by sending a six-byte sequence beginning with W or w.

Write a 16-bit value to an Input Configuration register.

Number of the Input Configuration register to be written. 2 is input
channel 0; 3 is input channel 1.

Hexadecimal value to write to the register.

The UART responds with the four-character sequence return linefeed > space.

The Clock Prescale registers are read by sending a two-byte sequence beginning with R or r.

Read an 8-bit value from a Clock Prescale register.

n

Number of the Clock Prescale register to be read. 0 is input channel 0; 1
is input channel 1.

The UART responds with the six-character sequence xx return linefeed > space, where xx is the two-
character hexadecimal value read from the 8-bit register.

The Input Configuration registers are read by sending a two-byte sequence beginning with R or r.

Read a 16-bit value from a Input Configuration register.

Number of the Input Configuration register to be written. 2 is input
channel 0; 3 is input channel 1.

The UART responds with the eight-character sequence xxxx return linefeed > space, where xxxx is the
four-character hexadecimal value read from the 16-bit register.