ES1371 Datasheet, PDF (7/37 Pages) List of Unclassifed Manufacturers – ENSONIQ AudioPCI 97 digital controller

ENSONIQ Proprietary Information
The internal memory organization for the Sample Rate Converter in AudioPCI 97 is shown below. The
memory is accessed through the Sample Rate Converter interface register located at address 10H.
Loc(hex)
0
Fifo Ram 128x16
PLAY 1 Left
10
PLAY 1 Right
PLAY/REC Registers
15 14 13 12 11 10 9 8 7 6 5 4
S
0 M TRUNC_START
N
F
3210
HSTART
1
VF.I
0
AC.I
20
PLAY 2 Left
30
PLAY 2 Right
40
REC Left
56
REC Right
6c Volume Reg Rec
70 PLAY 1 Regs
74 PLAY 2 Regs
78
REC Regs
7c Volume Reg Play
20
AC.F
30
VF.F
Volume Registers
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Rec Left 6c
0
REC.N
0
(copy)
Rec Right 6d
0
6e
6f
REC.N
0
(copy)
Unused
Unused
Play 1 L
Play 1 R
Play 2 L
Play 2 R
S
7c G P1.VOL.I
N
S
7d G P1.VOL.I
N
S
7e G P2.VOL.I
N
S
7f G P2.VOL.I
N
P1.VOL.F
P1.VOL.F
P2.VOL.F
P2.VOL.F
Sample Rate Converter Interface
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BDDDD
RAM ADDR
W U I P P R unused
RAM DATA
ESS1 2E
Y
C
ENSONIQ Proprietary Information
ENSONIQ AudioPCI 97 Specification Rev 1.1 Oct 1, 1997
7