HT37B90/HT37B70/HT37B50/HT37B30
Name
20H
Function
D7
D6
FR
D5
¾
D4
D3
D2
D1
D0
Channel number selection (CHAN)
VM
CH3 CH2 CH1 CH0
¾
21H
22H
23H
24H
25H
26H
27H
28H
29H
2AH
Frequency number high byte (FreqNH) BL3
BL2
FR6
BL1
FR5
BL0 FR11 FR10 FR9
FR4 FR3 FR2 FR1
FR8
FR0
ST8
ST0
Frequency number low byte (FreqNL)
Start address high byte (AddrH)
Start address low byte (AddrL)
Repeat number high byte (RepH)
Repeat number low byte (RepL)
Control register (ENV)
FR7
¾
ST14 ST13 ST12 ST11 ST10 ST9
ST6 ST5 ST4 ST3 ST2 ST1
ST7
WBS RE14 RE13 RE12 RE11 RE10 RE9 RE8
RE7 RE6 RE5 RE4 RE3 RE2 RE1 RE0
A_R
VL9
VL8 ENV1 ENV0 VR9 VR8
¾
¾
Left volume control (LVC)
Right volume control (RVC)
VL7
VL6
VL5
VL4
VL3
VL2
VL1
VL0
VR7 VR6 VR5 VR4 VR3 VR2 VR1 VR0
Wavetable Register Memory Map (20H~2AH)
ADPCM
Address Offset Register Name
R/W
W
Default Value
xxxx xxxx
Description
30H
31H
32H
33H
34H
ADR
XSPL
XSPH
ADPC
ADPS
ADPCM Data Register
W
0000 0000
0000 0000
00x0 xx00
0000 1111
Xn + SP Initial Register Low Byte
Xn + SP Initial Register High Byte
ADPCM Decoder control register
ADPCM Decoder Status Register
W
R/W
R
HT-ADPCM Decoder Registers
ADPS (34H) - ADPCM Status Register
Rev. 1.00
49
June 22, 2017
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
