D2-926XX Datasheet, PDF (33/37 Pages) Intersil Corporation – Integrated DSP Digital Sound Processing

D2-926xx
TABLE 3. DAE-3 AND DAE-3HT PIN AND I/O COMPARISON TABLE (Continued)
PIN NUMBERS
PIN NAMES
DESCRIPTION AND FUNCTION
DAE-3 DAE-3HT DAE-3 DAE-3HT
DAE-3
DAE-3HT
65
37 PROTECT2 PROTECT2 PWM Channel 2 Protect Input
PWM Channel 2 Protect Input
60
32 PROTECT3 PROTECT3 PWM Channel 3 Protect Input
PWM Channel 3 Protect Input
61
33 PROTECT4 PROTECT4 PWM Channel 4 Protect Input
PWM Channel 4 Protect Input
62
34 PROTECT5 PROTECT5 PWM Channel 5 Protect Input
PWM Channel 5 Protect Input
63
35 PROTECT6 PROTECT6 PWM Channel 6 Protect Input
/nMUTE
Assignable PWM Protect Input, or Mute Output
64
36 PROTECT7 PROTECT7 PWM Channel 7 Protect Input
/nOVRT
Assignable PWM Protect Input, or Over-Temperature
Monitor Input
95
54
PWM0 PWM0 PWM output pin. (One of 18 PWM output pins.
PWM output pin. (One of 12 PWM output pins.
Channel and operation assignment is defined by Channel and operation assignment is defined by
firmware.)
firmware.)
I/O Pin Function Assignment Comparison
Pin I/O functions and their assignments are supported through
user selections of the Audio Canvas III software that builds the
DAE-3 or DAE-3HT firmware. The designer has the option of
choosing the offered features and allocating I/O pins to those
features based on individual system design needs.
The differences of pin functions are shown in the preceding table,
but the following provides additional detail to certain of these
pins and functions as to their available features and assignment.
PWM OUTPUT PINS
• The DAE-3 has 18 PWM pins that are assignable to any of the
DAE-3’s 12 PWM channels.
• The DAE-3HT has 12 PWM pins that are assignable to any of
the DAE-3’s 12 PWM channels.
I²S DIGITAL INPUTS AND OUTPUTS
• The DAE-3 supports 8 audio INPUT channels through 4 I²S
serial digital audio input ports. Port assignments are
established with the firmware built with the Audio Canvas III
software for the DAE-3 devices.
• The DAE-3 supports 8 audio OUTPUT channels through 4 I²S
serial digital audio output ports. Port and channel assignments
are established through user selection with the firmware built
with the Audio Canvas III software for the DAE-3 devices.
• The DAE-3HT supports a user choice of either:
- 8 audio INPUT channels through 4 I²S serial digital audio
input ports, and no I²S OUTPUTS, or
- 6 INPUT channels through 3 I²S ports with 1 I²S OUTPUT
supporting 2 audio channels.
MCLK
• The DAE-3 utilizes a dedicated pin for the MCLK output. That
pin is available only for MCLK. User selection determines if
MCLK is present on this pin or if its output is off.
• The DAE-3HT provides a user selection to choose whether to
enable the MCLK output. This pin (the SCK1/MCLK pin)
becomes assigned to MCLK when MCLK is enabled. When
MCLK is disabled, the SDK1/MCLK pin becomes available for
assignment to other hardware I/O functions.
PROTECTION INPUT PINS
• The DAE-3 provides 9 protect input pins, where the first 8 are
allocated to the first 8 PWM engines. The last of the 9 is a
dedicated input for monitoring an over-temperature warning
control signal from power stages or other monitoring switches.
• The DAE-3HT provides 8 protect input pins. These pins are all
assignable to be used as the protect input for their default
PWM engine, or when not used for that protection become
available for use with other pin-assignable hardware I/O
functions. All selection is established through the user
interface of the Audio Canvas III design tool program.
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FN6787.3
May 17, 2016