Cypress S6J3200 Series, Manual

Page: 448 / 1355

CHAPTER 18:Sound Generator
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 447
[bit12] GID : Increase/decrease setting bit
This bit is for automatic increase/decrease setting of the sound, working with the Time Cycle Register
(SGTCR), the Increase and Decrease Data Register (SGIDR), and the automatic increase/decrease
enable bit (GEN).
This bit determines whether the value of Amplitude Data Register (SGAR) increases or decreases.
Bit Description
0 The value stored in the Amplitude Data Register (SGAR) decreases.
1 The value stored in the Amplitude Data Register (SGAR) increases.
Notes:
−
This bit is valid only when the automatic increase/decrease enable bit is set to
"enabled"(GEN="1").
−
If this bit is changed during the operation, it is reflected at the time when the value of "Amplitude
Data Register (SGAR)" is automatically updated.
[bit11] GEN : Automatic increase/decrease enable bit
This bit is for automatic increase/decrease setting of the sound, working with the Time Cycle Register
(SGTCR), the Increase and Decrease Data Register (SGIDR), and the Increase/decrease setting bit
(GID).
Bit Description
0 The automatic increase or decrease is disabled.
1 The automatic increase or decrease is enabled.
Note:
−
When this bit turns from "enabled" to "disabled", the Amplitude Data Register (SGAR) holds the
value at that time.
[bit10] Reserved : Reserved bit
Always write "0" to this bit. The read value is "0".