ViewSonic N1900w-1E Service Manual page 27

LOUTN Pin 8 - O- Negative audio output for left channel
LOUTP Pin 5 - O- Positive audio output for left channel
NC Pin 15 - I- No connection
PGNDL Pin 6, 7 - Power ground for left channel H-bridge
PGNDR Pin 18, 19 - Power ground for right channel H-bridge
PVDDL Pin 4, 9 Power supply for left channel H-bridge
PVDDR Pin 16, 21 Power supply for right channel H-bridge
RINN Pin 24 - I- Positive differential audio input for right channel
RINP Pin 23 - I- Negative differential audio input for right channel
ROSC Pin 11 I A resistor connected to the ROSC terminal sets the oscillation frequency in conjunction
with COSC. For proper operation, connect a 120-kW resistor from ROSC to ground.
ROUTN Pin 17 -O- Negative output for right channel
ROUTP Pin 20 -O- Positive output for right channel
SHUTDOWN 3- I- Places the amplifer in shutdown mode if a TTL logic low is placed on this terminal;
normal operation if a TTL logic high is placed on this terminal.
VDD Pin 13 - Analog power supply
VOLUME Pin 14 I DC volume control for setting the gain on the internal amplifiers. The dc voltage
range is 0 to VDD.
24
ViewSonic Corporation N1900w-1E
Confidential - Do Not Copy