Data Sheet
June 2001
DSP16410B Digital Signal Processor
Agere Systems Inc.
Agere Systems—Proprietary
Use pursuant to Company instructions
171
4 Hardware Architecture
(continued)
4.16 Serial Interface Unit (SIU)
(continued)
4.16.12 Channel Mode—32 Channels or Less in Two Subframes or Less
(continued)
Table 93. Location of Control Fields Used in Channel Mode
Even Subframe Control
Input/
Output
Input
ISFIDV_E
ISFID_E[1:0]
SCON3
[1:0]
ISFVEC_E[15:0]
SCON4
[15:0]
Output
OSFIDV_E
OSFID_E[1:0]
SCON3
[9:8]
OSFVEC_E[15:0]
SCON6
[15:0]
OSFMSK_E[15:0]
SCON8
[15:0]
Table 94. Description of Control Fields Used in Channel Mode
Odd Subframe Control
Field
Description
Field
Register
Register
SCON3
[2]
ISFIDV_O
ISFID_O[1:0]
ISFVEC_O[15:0]
OSFIDV_O
OSFID_O[1:0]
OSFVEC_O[15:0]
OSFMSK_O[15:0]
SCON3
[5]
SCON3
[4:3]
SCON5
[15:0]
SCON3
[13]
SCON3
[12:11]
SCON7
[15:0]
SCON9
[15:0]
Subframe ID valid (enable).
Subframe ID.
Channel activation vector.
Subframe ID valid (enable).
Subframe ID.
Channel activation vector.
Channel masking vector.
SCON3
[10]
Even Subframe Control
Odd Subframe Control
Input/
Output
Input
Field
Description
Field
Description
ISFIDV_E
ISFID_E[1:0]
Enable even input subframes.
Select one of four even input
subframes 0, 2, 4, or 6
(active subframe = 2
×
ISFID_E).
ISFIDV_O
ISFID_O[1:0]
Enable odd input subframes.
Select one of four odd input sub-
frames 1, 3, 5, or 7
(active subframe =
(2
×
ISFID_O) + 1).
Bit vector activates up to 16 logical
channels independently within
selected odd input subframe.
ISFVEC_E[15:0]
Bit vector activates up to
16 logical channels indepen-
dently within selected even input
subframe.
Enable even output subframes.
Select one of four even output
subframes 0, 2, 4, or 6
(active subframe =
2
×
OSFID_E).
Bit vector activates up to
16 logical channels indepen-
dently within selected even out-
put subframe.
Bit vector selects up to 16 logical
channels independently within
selected even output subframe to
be masked
.
ISFVEC_O[15:0]
Output
OSFIDV_E
OSFID_E[1:0]
OSFIDV_O
OSFID_O[1:0]
Enable odd output subframes.
Select one of four odd output sub-
frames 1, 3, 5, or 7
(active subframe =
(2
×
OSFID_O) + 1).
Bit vector activates up to 16 logical
channels independently within
selected odd output subframe.
OSFVEC_E[15:0]
OSFVEC_O[15:0]
OSFMSK_E[15:0]
OSFMSK_O[15:0]
Bit vector selects up to 16 logical
channels independently within
selected odd output subframe to be
masked
.
If an output channel is masked, then the SOD pin is forced to the high-impedance state during that channel’s time slot.