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S16A User’s Guide Registers
EDT, Inc. October, 1996 35
Write to a Clock Prescale Register
The clock prescale registers are written by sending a four-byte sequence beginning with W or w.
Wnmm Write an 8-bit value to a Clock Prescale register.
n Number of the Clock Prescale register to be written. 0 is input channel 0;
1 is input channel 1.
mm Hexadecimal value to write to the register.
The UART responds with the four-character sequence return linefeed > space.
Write to an Input Configuration Register
The input configuration registers are written by sending a six-byte sequence beginning with W or w.
Wnmmmm Write a 16-bit value to an Input Configuration register.
n Number of the Input Configuration register to be written. 2 is input
channel 0; 3 is input channel 1.
mmmm Hexadecimal value to write to the register.
The UART responds with the four-character sequence return linefeed > space.
Read from a Clock Prescale Register
The Clock Prescale registers are read by sending a two-byte sequence beginning with R or r.
Rn 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.
Read from an Input Configuration Register
The Input Configuration registers are read by sending a two-byte sequence beginning with R or r.
Rn Read a 16-bit value from a Input Configuration register.
n 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.