D2-45057_14 Datasheet, PDF (11/31 Pages) Intersil Corporation – Intelligent Digital Amplifier PWM Controller and Audio Processor

D2-45057, D2-45157
Pin Description (Continued)
PIN
VOLTAGE
NAME
LEVEL
PIN (Note 13) TYPE (V)
DESCRIPTION
24 nERROR/ I/O
CFG0
3.3 Output configuration selection input, and nERROR output. Upon device reset, pin operates
as input, using application-installed pull-up or pull-down connection to pin to specify one of
4 amplifier configurations. Upon internal D2-45057, D2-45157 firmware execution, pin
becomes output, providing active-low output drive when amplifier protection monitoring
detects an error condition. When operating as output, provides 4mA drive strength. (Note:
This pin may also be referenced as “PSCURR” on some reference designs. Function is
identical regardless of name.)
25 PSSYNC/ I/O
CFG1
3.3 Output configuration selection input, and power supply sync output. Upon device reset, pin
operates as input, using application-installed pull-up or pull-down connection to pin to
specify one of 4 amplifier configurations. Upon internal D2-45057, D2-45157 firmware
execution, pin becomes output, providing synchronizing signal to on-board power supply
circuits. When operating as output, provides 4mA drive strength. Note: This pin may also
be referenced as “PSTEMP” on some reference designs. Function is identical regardless of
name.
26 PROTECT0 I/O
3.3 PWM protection input. Input has hysteresis. Protection monitoring functionality of pin is
controlled by internal D2-45057, D2-45157 firmware, and dependent on which of the 4
amplifier configurations is enabled.
27 PROTECT1 I/O
3.3 PWM protection input. Input has hysteresis. Protection monitoring functionality of pin is
controlled by internal D2-45057, D2-45157 firmware, and dependent on which of the 4
amplifier configurations is enabled.
28 PROTECT2 I/O
3.3 PWM protection input. Input has hysteresis. Protection monitoring functionality of pin is
controlled by internal D2-45057, D2-45157 firmware, and dependent on which of the 4
amplifier configurations is enabled.
29 nERROR0 O
3.3 Overcurrent protection output, channel A output stage. Open drain 16mA driver, with internal
100kΩ (approx.) pull-up. Pulls low when active from overcurrent detection of output stage.
30 nERROR1 O
3.3 Overcurrent protection output, channel B output stage. Open drain 16mA driver, with internal
100kΩ (approx.) pull-up. Pulls low when active from overcurrent detection of output stage.
31 nERROR2 O
3.3 Overcurrent protection output, channel C output stage. Open drain 16mA driver, with internal
100kΩ (approx.) pull-up. Pulls low when active from overcurrent detection of output stage.
32 nERROR3 O
3.3 Overcurrent protection output, channel D output stage. Open drain 16mA driver, with internal
100kΩ (approx.) pull-up. Pulls low when active from overcurrent detection of output stage.
33 HVDDD P
HV
Output stage D high voltage supply power. A separate power pin connection is provided for
each of the output stages. All of the HVDD[A:D] pins and the VDDHV pin connect to the
system “HV” power source.
34 HGNDD GND
HV
Output stage D high voltage supply ground. A separate ground pin connection is provided
for each of the output stages. All of the HGND[A:D] pins connect to system “HV” power
ground (also see Note 15).
35 OUTD
O
HV
PWM power amplifier output, channel D.
36 HSBSD
I
HV
High-side boot strap input, output channel D. Capacitor couples to OUTD amplifier output.
37 HSBSC
I
HV
High-side boot strap input, output channel C. Capacitor couples to OUTC amplifier output.
38 OUTC
O
HV
PWM power amplifier output, channel C.
39 HGNDC GND
HV
Output stage C high voltage supply ground. A separate ground pin connection is provided
for each of the output stages. All of the HGND[A:D] pins connect to system “HV” power
ground (also see Note 15).
40 HVDDC
P
HV
Output stage C high voltage supply power. A separate power pin connection is provided for
each of the output stages. All of the HVDD[A:D] pins and the VDDHV pin connect to the
system “HV” power source.
41 SUBOUT O
3.3 “Subwoofer” channel PWM output, with 16mA drive strength. Connects to filter network for
supplying line-level analog output to subwoofer.
42
DNC
-
-
Do not connect to this pin.
11
FN6785.0
July 29, 2010