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ISDN and 16-bit Audio
8-19
Audio CODEC
0 = FSYNC and SCLK tri-sate 12 clock after D/C goes
low
1 = FSYNC and SCLK tri-sate immediately after D/C
goes low
Bits 5:4
MCK1:0 – Clock source select
00 = SCLK is master clock, 256 bits per frame. BSEL
must be set to 2 and XCLK must be set to 0.
01 = XTAL 1 is clock source
10 = XTAL 2 is clock source
11 = CLKIN is clock source and must be 256 Fs
Bits 3:2
BSEL1:0 – Select bit rate
00 = 64 bits per frame
01 = 128 bits per frame
10 = 256 bits per frame
11 = reserved
Bit 1
XCLK – Transmit clock
0 = Receive SCLK and FSYNC from external source
1 = Generate SCLK and FSYNC
Bit 0
Transmitter enable
0 = Enable serial data output
1 = Disable serial data output
Test Register
Bits 7:2
Test – These bits must be written with zero
Bit 1
ENL – Enable Loopback
0 = disabled
1 = enabled
Bit 0
DAD – Loopback Mode
0 = Digital-digital loopback
1 = Digital-analog-digital loopback
DAD
ENL
7
3
2
4
1
0
5
6
S3GX_TRMBook Page 19 Friday, September 19, 1997 11:39 am
Summary of Contents for SPARCbook 3 series
Page 8: ...viii S3GX_TRMBook Page viii Friday September 19 1997 11 39 am...
Page 44: ...2 16 The SPARC CPU SBus Controller S3GX_TRMBook Page 16 Friday September 19 1997 11 39 am...
Page 76: ...5 8 SCSI Controller DMA Support S3GX_TRMBook Page 8 Friday September 19 1997 11 39 am...
Page 146: ...9 28 MODEM Class 2 Fax Command Set S3GX_TRMBook Page 28 Friday September 19 1997 11 39 am...
Page 180: ...11 30 Display Interface RAMDAC S3GX_TRMBook Page 30 Friday September 19 1997 11 39 am...
Page 216: ...Index vi S3GX_TRMBook Page vi Friday September 19 1997 11 39 am...