
Data Sheet
June 2001
DSP16410B Digital Signal Processor
Agere Systems Inc.
Agere Systems—Proprietary
Use pursuant to Company instructions
175
4 Hardware Architecture
(continued)
4.16 Serial Interface Unit (SIU)
(continued)
4.16.13 Channel Mode—Up to 128 Channels in a Maximum of Eight Subframes
(continued)
Figure 51
illustrates the conditions under which the SIINT or SOINT input or output interrupt is asserted if the IINT-
SEL[1:0] or OINTSEL[1:0] field (
SCON10
[12:11] or
SCON10
[14:13]—see
Table 111 on page 188
) is programmed
to cause the SIU to generate interrupts on subframe boundaries. The SIU computes the current channel number
modulo 16. It compares this value to 15 and generates SIINT or SOINT if there is a match. This notifies the cores
of the completion of the subframe.
Generating Interrupts on Subframe Boundaries
Figure 51. Generating Interrupts on Subframe Boundaries
96
CH
97
CH
98
CH
99
CH
100
CH
106
CH
107
CH
108
CH
109
CH
110
CH
111
CH
64
CH
65
CH
66
CH
67
CH
68
CH
74
CH
75
CH
76
CH
77
CH
78
CH
79
CH
32
CH
33
CH
34
CH
35
CH
36
CH
42
CH
43
CH
44
CH
45
CH
46
CH
47
CH
0
CH
1
CH
2
CH
3
CH
4
CH
10
CH
11
CH
12
CH
13
CH
14
CH
15
CH
SELECT SUBFRAME 7 (
I,O
SFID_O = 3)
112
CH
113
CH
114
CH
115
CH
116
CH
122
CH
123
CH
124
CH
125
CH
126
CH
127
CH
80
CH
81
CH
82
CH
83
CH
84
CH
90
CH
91
CH
92
CH
93
CH
94
CH
95
CH
48
CH
49
CH
50
CH
51
CH
52
CH
58
CH
59
CH
60
CH
61
CH
62
CH
63
CH
16
CH
17
CH
18
CH
19
CH
20
CH
26
CH
27
CH
28
CH
29
CH
30
CH
31
CH
SELECT SUBFRAME 1 (
I,O
SFID_O = 0)
SELECT SUBFRAME 5 (
I,O
SFID_O = 2)
SELECT SUBFRAME 3 (
I,O
SFID_O = 1)
EVEN SUBFRAMES
ODD SUBFRAMES
SELECT SUBFRAME 6 (
I,O
SFID_E = 3)
SELECT SUBFRAME 0 (
I,O
SFID_E = 0)
SELECT SUBFRAME 4 (
I,O
SFID_E = 2)
SELECT SUBFRAME 2 (
I,O
SFID_E = 1)
(CURRENT CHANNEL NUMBER)
MODULO 16
= 15
(CURRENT CHANNEL NUMBER)
MODULO 16
= 15