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4 Other Board Level Connections
4.1 Analog Interface
Other Board Level Connections
3.4.14 Power-Up Pop Reductions
Settings on this tab can reduce the pop noise heard at the moment the TSC2111 output circuit is powered
up. The pop noise reduction can be set on the DAC or the analog output driver circuit. Click on the Enable
DAC HP PR checkbox to enable the DAC pop-reduction feature, and the Enable Driver PR checkbox to
enable the output driver pop-reduction feature. Change the Driver PR Duration to set and optimize the
noise reduction effects.
This chapter describes the board-level connectors of the TSC2111EVM or EVM-PDK. Using these
connectors, the TSC2111 EVM can operate as a stand-alone unit, or as the daughter-board of the
USBMODEVM.
For maximum flexibility, the TSC2111EVM is designed for easy interface to multiple analog sources.
Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 2x10-pin
dual-row header/socket combination at J1 and J2. These headers/sockets provide access to the analog
input and output pins of the device. Table 3 summarizes the analog interface pinout for the TSC2111EVM.
Table 3. Analog Interface Pinout
Pin Number Signal Description
J1.1 CP_IN+ Input from cell-phone module (+)
J1.2 X+ Touch screen X+ position input and driver
J1.3 CP_IN– Input from cell-phone module (-)
J1.4 X– Touch screen X– position input and driver
J1.5 CP_OUT+ Output to cell-phone module (+)
J1.6 Y+ Touch screen Y+ position input and driver
J1.7 CP_OUT– Output to cell-phone module (-)
J1.8 Y– Touch screen Y– position input and driver
J1.9 AGND Analog ground
J1.10 VBAT Battery monitor input
J1.11 AGND Analog ground
J1.12 AUX1 First auxiliary input
J1.13 AGND Analog ground
J1.14 NC Not connected
J1.15 NC Not connected
J1.16 AUX2 Second auxiliary input
J1.17 AGND Analog ground
J1.18 AGND Analog ground
J1.19 AGND Analog ground
J1.20 REF+ Reference Voltage
J2.1 OUT32N Receiver driver output (–)
J2.2 SPK1 Headset driver output (1) /receiver driver output (+)
J2.3 VGND Virtual ground for audio outputs
J2.4 SPK2 Headset driver output (2)
J2.5 OUT8N Loudspeaker driver output (–)
J2.6 OUT8P Loudspeaker driver output (+)
J2.7 MICBIAS_HED Headset microphone bias voltage
J2.8 MICIN_HED Headset microphone input
J2.9 AGND Analog ground
SLAU178 – April 2006 TSC2111EVM and TSC2111EVM-PDK 23
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