Data Sheet
June 2001
DSP16410B Digital Signal Processor
Agere Systems Inc.
Agere Systems—Proprietary
Use pursuant to Company instructions
179
4 Hardware Architecture
(continued)
4.16 Serial Interface Unit (SIU)
(continued)
4.16.14 SIU Examples
(continued)
4.16.14.2 ST-Bus Interface
(continued)
Table 99
describes the SIU control registers and control register fields that must be configured as required by the
particular system application using an ST-Bus interface.
Table 99. Control Register and Fields That Are Configured as Required for ST-Bus Interface
Control Register or
Field
OMSB
OFORMAT[1:0]
IMSB
IFORMAT[1:0]
IFRAME
IFLIM[6:0]
OFRAME
OFLIM[6:0]
OSFIDV_O
OSFID_O[1:0]
OSFIDV_E
OSFID_E[1:0]
ISFIDV_O
ISFID_O[1:0]
ISFIDV_E
ISFID_E[1:0]
ISFVEC_E[15:0]
ISFVEC_O[15:0]
OSFVEC_E[15:0]
OSFVEC_O[15:0]
OSFMSK_E[15:0]
OSFMSK_O[15:0]
OINTSEL[1:0]
IINTSEL[1:0]
ICIX0
[15:0]
Description
SCON0
[10]
SCON0
[9:8]
SCON0
[2]
SCON0
[1:0]
SCON1
[7]
SCON1
[6:0]
SCON2
[7]
SCON2
[6:0]
SCON3
[13]
SCON3
[12:11] Selects odd output subframe 1, 3, 5, or 7.
SCON3
[10]
Set to enable even output subframes.
SCON3
[9:8]
Selects even output subframe 0, 2, 4, or 6.
SCON3
[5]
Set to enable odd input subframes.
SCON3
[4:3]
Selects odd input subframe 1, 3, 5, or 7.
SCON3
[2]
Set to enable even input subframes.
SCON3
[1:0]
Selects even input subframe 0, 2, 4, or 6.
SCON4
[15:0]
Set to enable corresponding channel of the selected even input subframe.
SCON5
[15:0]
Set to enable corresponding channel of the selected odd input subframe.
SCON6
[15:0]
Set to enable corresponding channel of the selected even output subframe.
SCON7
[15:0]
Set to enable corresponding channel of the selected odd output subframe.
SCON8
[15:0]
Set to mask corresponding channel of the selected even output subframe.
SCON9
[15:0]
Set to mask corresponding channel of the selected odd output subframe.
SCON10
[14:13] Selects one of four conditions for which the SIU output interrupt (SOINT) is asserted.
SCON10
[12:11] Selects one of four conditions for which the SIU input interrupt (SIINT) is asserted.
Input channel index for the active even input subframe—selects one of two DMAU SWT channels (SWT0
or SWT1 for SIU0; SWT2 or SWT3 for SIU1) for each logical channel in the active even input subframe.
Input channel index for the active odd input subframe—selects one of two DMAU SWT channels (SWT0
or SWT1 for SIU0; SWT2 or SWT3 for SIU1) for each logical channel in the active odd input subframe.
Input channel index for the active even output subframe—selects one of two DMAU SWT channels
(SWT0 or SWT1 for SIU0; SWT2 or SWT3 for SIU1) for each logical channel in the active even output
subframe.
Input channel index for the active odd output subframe—selects one of two DMAU SWT channels
(SWT0 or SWT1 for SIU0; SWT2 or SWT3 for SIU1) for each logical channel in the active odd output
subframe.
Selects LSB- or MSB-first output data.
Selects linear, μ-law, or A-law output format.
Selects LSB- or MSB-first input data.
Selects linear, μ-law, or A-law input format.
Clear to select input channel mode. Set to select input frame mode.
Program to 127 for 128 channels per input frame.
Clear to select output channel mode. Set to select output frame mode.
Program to 127 for 128 channels per output frame.
Set to enable odd output subframes.
ICIX1
[15:0]
OCIX0
[15:0]
OCIX1
[15:0]