Which pins does the Audio Shield use exclusively?

[Salchicha]

I'm using Teensy 4.1 and I want to add the Rev D2 audio shield, but some the pins it connects to are already being used, does the shield need exclusive access to all of the pins it connects to or are there some I can connect other things to as well? The pins I need alternatives for are marked ***

NeoTrellis: 19 ***, 18 *** (I've tried to use the SCL2 and SDA2 pins but cant get it to work).

IL9341 Display

#define TFT_DC 9 ***
#define TFT_CS 10 ***
#define TFT_RST 8 ***
#define TFT_SCK 13 ***
#define TFT_MISO 12 ***
#define TFT_MOSI 11 ***
#define TOUCH_MOSI 26
#define TOUCH_MISO 39
#define TOUCH_SCK 27
#define TOUCH_CS 38

The alternate pins listed on the IL9341 info page are 9, 15, 20, 21 but these are all used by the audio sheild.

 

[mjs513]

If you look at audio shield product page, there is a table that defines what pins that are used by the audio shield: https://www.pjrc.com/store/teensy3_audio.html

Audio Shield Signal	Rev D, D2 (Teensy 4.x)	Rev C (Teensy 3.x)	Required For	Function
MCLK	23 (MCLK1)​	11 (MCLK)​	Audio	Audio Master Clock, 11.29 MHz
BCLK	21 (BCLK1)​	9 (BCLK)​	Audio	Audio Bit Clock, 1.41 or 2.82 MHz
LRCLK	20 (LRCLK1)​	23 (LRCLK)​	Audio	Audio Left/Right Clock, 44.1 kHz
DIN	7 (OUT1A)​	22 (OUT)​	Audio Output	Audio Data from Teensy to Audio Shield Goes to both headphone jack and Line-Out pins
DOUT	8 (IN1)​	13 (IN)​	Audio Input	Audio Data from Audio Shield to Teensy Comes from either Microphone or Line-In pins
SCL	19​	19​	Audio Config	Control Clock (I2C)
SDA	18​	18​	Audio Config	Control Data (I2C)
SCK	13​	14​	Optional Data SD or MEM	Data Storage (SPI) Clock
MISO	12​	12​	Optional Data SD or MEM	Data Storage (SPI) from SD/MEM to Teensy
MOSI	11​	7​	Optional Data SD or MEM	Data Storage (SPI) from Teensy to SD/MEM
SDCS	10​	10​	Optional Data SD Card	Chip Select (SPI) for SD Card
MEMCS	6​	6​	Optional Data MEM Chip	Chip Select (SPI) for Memory Chip
Vol	15 / A1​	15 / A1​	Optional Knob	Volume Thumbwheel (analog signal)

 

[PaulStoffregen]

SCL and SDA can be shared.

Pins 10,11,12,13 can be used if you do not put a SD card into the socket.

 

[Salchicha]

Thanks both.