Texas Instruments PCM3070RHBEVM-K Evaluation Module PCM3070RHBEVM-K PCM3070RHBEVM-K 데이터 시트
제품 코드
PCM3070RHBEVM-K
EVM Description and Basics
2.2
Default Configuration and Connections
2.2.1
USB-MODEVM
provides a list of the SW2 settings on the USB-MODEVM. For use with the PCM3070EVM, SW-2
positions 1, 3, 4, 5, 6, and 7 must be set to ON, whereas SW-2.2 and SW-2.8 must be set to OFF. If the
PCM3070EVM is to be used with an external audio interface, SW2.4 and SW2.5 also need to be set to
OFF and such interface must be connected as explained in
PCM3070EVM is to be used with an external audio interface, SW2.4 and SW2.5 also need to be set to
OFF and such interface must be connected as explained in
Table 1. USB-MODEVM SW2 Settings
SW-2 Switch Number
Label
Switch Description
1
A0
USB-MODEVM EEPROM I
2
C Address A0
ON: A0 = 0
OFF: A0 = 1
OFF: A0 = 1
2
A1
USB-MODEVM EEPROM I
2
C Address A1
ON: A1 = 0
OFF: A1 = 1
OFF: A1 = 1
3
A2
USB-MODEVM EEPROM I
2
C Address A2
ON: A2 = 0
OFF: A2 = 1
OFF: A2 = 1
4
USB I
2
S
I
2
S Bus Source Selection
ON: I
2
S Bus connects to TAS1020
OFF: I
2
S Bus connects to USB-MODEVM J14
5
USB MCK
I
2
S Bus MCLK Source Selection
ON: MCLK connects to TAS1020
OFF: MCLK connects to USB-MODEVM J14
OFF: MCLK connects to USB-MODEVM J14
6
USB SPI
SPI Bus Source Selection
ON: SPI Bus connects to TAS1020
OFF: SPI Bus connects to USB-MODEVM J15
ON: SPI Bus connects to TAS1020
OFF: SPI Bus connects to USB-MODEVM J15
7
USB RST
RST Source Selection
ON: EVM Reset Signal comes from TAS1020
OFF: EVM Reset Signal comes from USB-MODEVM J15
ON: EVM Reset Signal comes from TAS1020
OFF: EVM Reset Signal comes from USB-MODEVM J15
8
EXT MCK
External MCLK Selection
ON: MCLK Signal is provided from USB-MODEVM J10
OFF: MCLK Signal comes from either selection of SW2-5
ON: MCLK Signal is provided from USB-MODEVM J10
OFF: MCLK Signal comes from either selection of SW2-5
2.2.2
PCM3070 Jumper Locations
provides a list of jumpers found on the EVM and their factory default conditions.
Table 2. List of Jumpers and Switches
Jumper
Default
Jumper Description
Position
W1
Removed
Connects an external microphone bias.
W2
Removed
Onboard microphone connect (-).
W3
Removed
Onboard microphone connect (+).
W4
Removed
Connects bias resistor to IN3_R.
W5
Removed
Connects bias resistor to IN3_L.
W6
Removed
Provides means to change effective resistance to 1 k
Ω
for differential microphone.
W7
Installed
Connects IN3_R to J5/microphone.
W8
Removed
Connects IN3_R to GND or 1-k
Ω
pulldown.
W9
Removed
Connects 16-
Ω
load to HPL
W10
Removed
Connects 16-
Ω
load to HPR
W11
Removed
DC-couples HPL to its output. Use when driving differentially.
W12
Removed
DC-couples HPR to its output. Use when driving differentially.
W13
Installed
Selects the onboard EEPROM as the TAS1020B firmware source.
5
SLAU331A – January 2011 – Revised October 2012
PCM3070EVM-K Evaluation Module
Copyright © 2011–2012, Texas Instruments Incorporated