st2064b Sitronix Technology Corporation, st2064b Datasheet - Page 28

• Manufacturer Part Number: st2064b
• Description: 8 Bit Microcontroller With 64k Bytes Rom
• Manufacturer: Sitronix Technology Corporation

13.2.2 PSG Tone Programming
Tone or DAC function is defined by register DACE. Write to
C1EN will enable tone generator when PSG is in tone
Ver. 3.0
Address Name
$016
Bit 0:
Bit 1:
Bit 2:
Bit 3:
Bit 6~4: PCK[2~0] : clock source selection for PSG and DAC
PSGC
DACE : Tone(Noise) or DAC Generator selection bit
C0EN : PSG channel 0 (Tone) enable bit
C1EN : PSG channel 1 (Tone or Noise) enable bit
PRBS : Tone or Noise generator selection bit
1 = PSG is used as the DAC generator
0 = PSG is used as the Tone (Noise) generator
1 = PSG0 (Tone) enable
0 = PSG0 (Tone) disable
1 = PSG1 (Tone or Noise) enable
0 = PSG1 (Tone or Noise) disable
1 = Noise generator
0 = Tone generator
000 = SYSCK
X01 = SYSCK / 2
X10 = SYSCK / 4
011 = SYSCK / 8
100 = SYSCK x 2
R/W
W
W
Bit 7
-
-
TABLE 13-4 PSG Control Register (PSGC)
PCK[2]
PCK[2]
Bit 6
PCK[1]
PCK[1]
Bit 5
PCK[0]
PCK[0]
28/57
Bit 4
function. Noise or tone function is selected by PRBS.
DMD[1] DMD[0]
PRBS
Bit 3
C1EN
Bit 2
C0EN
Bit 1
INH
DACE=0
DACE=1
Bit 0
- 000 0000
- 000 0000
Default
ST2064B
5/8/09