NEC V850E/Dx3 Preliminary User's Manual page 845

Sound Generator (SG)
Bit position
4
1
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(1) SG0CTL - SG0 control register
The 8-bit SG0CTL register controls the operation of the Sound Generator.
Access This register can be read/written in 8-bit or 1-bit units.
Address <base> + 7
H
Initial Value 00 . This register is cleared by any reset.
H
7
0
R
a)
The "0" value of this bit must not be changed!
Table 24-3 SG0CTL register contents
Bit name Function
PWR Power save mode selection:
0: Clock input switched off
operate).
1: Clock input switched on
OS SG0 output mode selection:
0: Selects SGOF and SGOA outputs (frequency and amplitude separated).
1: Selects SGO output (frequency and amplitude mixed).
Note Change the contents of this register only when the sound is stopped (register
SG0PWM cleared).
Preliminary User's Manual U17566EE1V2UM00
6 5 4 3
0 0 PWR 0
R R R/W R
(
the Sound Generator is disabled and does not
(
the Sound Generator is enabled and ready to use).
Chapter 24
2 1 0
a
0 OS 0
R R/W R/W
845