Control Outputs - Harman Kardon DPR1005 Service Manual

PR1005/DPR2005
D
CONSUMER
4.2.5
SDA
SCL
/RESET
/PWRDWN
4.2.6
/ERROR
4.2.7
Z2_EN
Z2_AD_EN
MD[1,0]
4 2
5 3
6 3
7 4
8 4
TABLE 15: SDO Output to Channel Mapping
CONTROL INPUTS
Serial Control Data and Address
This pin is the bidirectional Serial Data and Address line for the 2-wire serial control interface. The pin is
pulled internally high to 3.3 volts via a 10 kΩ resistor.
Serial Control Clock
This pin is the bidirectional Serial Clock line of the 2-wire serial control interface. The pin is pulled
internally high to 3.3 volts via a 10 kΩ resistor.
Reset
This pin is the reset input to the module. Driving the reset to active low for 10 ms will bring all internal
devices to their default state. This is a 3.3 volt input with an internal 10 kΩ resistor to ground. During the
power on sequence, the reset line must be low during the high voltage supply ramp period. It must be held
low for a minimum of 500ms after the supply reaches 95% of its nominal value.
Amplifier Power Down
This pin is the amplifier power down input. When set high, the amplifier controller is placed in its active
state. When pulled low, the amplifier starts a power down sequence. All outputs are soft muted and the
output stages are disabled. Internal register values are maintained during the power down state. This is a 3.3
volt input with an internal 10 kΩ resistor to ground.

CONTROL OUTPUTS

Amplifier Error
The /ERROR signal is an open-collector output with internal 10k ohm pullup to +3.3V. When low,
/ERROR indicates that a fault condition has occurred in the amplifier, or the amplifier is powered down.
Fault conditions include over-temperature, over-current, short circuit, and power output power stage
disabled. When the module is issued a reset, the output stage will be disabled. The error signal will remain
active low until the EAPD (External Amplifier Power Down) bit is set in the appropriate controller
register.
ZONE 2 CONTROL SIGNAL INPUTS
Zone 2 Enable
This pin is the Zone 2 enable. When set active high, the second zone feature is activated. Amplifier
channels five and six are configured as an independent second zone. The second zone input source may be
either the Zone 2 digital I
internal 10 kΩ resistor to ground.
Zone 2 Analog Enable
This pin is the Zone 2 analog input enable. When set active high, the Zone 2 analog input is selected. When
set clear low, the Zone 2 digital I
resistor to ground.
Mode Configuration
These pins are the Mode access inputs. The Mode access inputs allow the primary and second zone
configuration to be separately controlled. See Chapter 5 for additional detail on the use of the MD1 and
MD0 inputs. The following table describes how the Z2_EN and Mode inputs affect the operating
configuration.
Z2_EN
x
Table 16: MD Input Control of Configuration Access
Right
Left
Right
Left
Right
2
S input port or the Zone 2 analog stereo input. This is a 3.3 volt input with an
2
S input port is active. This is a 3.3 volt input with an internal 10 kΩ
MD[1,0] Configuration Access
11 Global control access
47
harman/kardon
GR70 Data Sheet Aug 26, 2003 v1.82