Data Sheet
June 2001
DSP16410B Digital Signal Processor
Agere Systems Inc.
Agere Systems—Proprietary
Use pursuant to Company instructions
189
4 Hardware Architecture
(continued)
4.16 Serial Interface Unit (SIU)
(continued)
Table 111. SCON10 (SIU Input/Output General Control) Register
(continued)
4.16.15 Registers
(continued)
5
OFSK
§
0
The external output frame sync pin (SOFS) is active-high.
If OFSA is 0 (passive sync), do not invert SOFS to generate the internal output
frame sync (OFS).
If OFSA is 1 (active sync), do not invert the active generated output frame sync
(OFS) before applying to the SOFS pin.
The external output frame sync pin (SOFS) is active-low.
If OFSA is 0 (passive sync), invert SOFS to generate the internal output frame
sync (OFS).
If OFSA is 1 (active sync), invert the active generated output frame sync (OFS)
before applying to the SOFS pin.
Passive mode output frame sync—drive the internal output frame sync (OFS)
from the external output frame sync pin (SOFS modified according to OFSK and
SCON2
[OFSDLY]). The SIU configures SOFS as an input.
Active mode output frame sync
—drive the internal output frame sync (OFS)
from the active generated frame sync (AGFS) modified according to
SCON2
[OFSDLY]. The SIU configures SOFS as an output.
Capture input data from the SID pin on the falling edge of the input bit clock pin
(SICK).
If ICKA is 0 (passive clock), do not invert the input bit clock pin (SICK) to gener-
ate ICK.
If ICKA is 1 (active clock), do not invert the active generated input bit clock
(ICK) before applying to the SICK pin.
Capture input data from the SID pin on the rising edge of the input bit clock pin
(SICK).
If ICKA is 0 (passive clock), invert SICK to generate the internal input bit clock
(ICK).
If ICKA is 1 (active clock), invert the active generated input bit clock (ICK)
before applying to the SICK pin.
Passive mode input bit clock
—drive the internal input bit clock (ICK) from the
external input bit clock pin (SICK pin modified according to ICKK). The SIU con-
figures SICK as an input.
Active mode input bit clock—drive the internal input bit clock (ICK) from the active
generated input bit clock derived from CLK or SCK. The SIU configures SICK as
an output.
To determine the type of error, the program can read the contents of the
STAT
register (see
Table 116 on page 194
).
If the IRESET field (
SCON1
[10]) or ORESET field (
SCON2
[10]) is cleared, do not change the value in this field.
§
If the ORESET field (
SCON2
[10]) is cleared, do not change the value in this field.
The combination of passive output bit clock (OCKA = 0) and active output frame sync (OFSA = 1) is not supported. The combination
of passive input bit clock (ICKA = 0) and active input frame sync (IFSA = 1) is not supported.
§§
If the IRESET field (
SCON1
[10]) is cleared, do not change the value in this field.
R/W
0
1
4
OFSA
§
0
R/W
0
1
3
ICKK
§§
0
R/W
0
1
2
ICKA
§§
0
R/W
0
1
Bit
Field
Value
Description
R/W Reset
Value