23
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I2C3_SCL
I2C3 serial clock
162
I2C3_SCL
I2C3_SDA
I2C3 serial data
164
I2C3_SDA
I2C4_SCL
I2C4 serial clock
158
I2C4_SCL
I2C4_SDA
I2C4 serial data
160
I2C4_SDA
2.11 PWM
The pulse-width modulator (PWM) has a 16-bit counter and is optimized to generate sound from stored
sample audio images. It can also generate tones. It uses 16-bit resolution and a 4x16 data FIFO to
generate sound.
Signal
Description
Pin
Defaults Function
PWM1
PWM1 output
194
GPIO1_IO01
196
SPDIF_EXT_CLK
160
I2C4_SDA
PWM2
PWM2 output
184
GPIO1_IO13
198
SPDIF_RX
158
I2C4_SCL
PWM3
PWM3 output
189
GPIO1_IO14
200
SPDIF_TX
164
I2C3_SDA
PWM4
PWM4 output
187
GPIO1_IO15
182
SAI3_MCLK
162
I2C3_SCL
2.12 JTAG
Support for 6-pin (JTAG) debug interface
Signal
Description
Pin
Defaults Function
JTAG MOD
JTAG MODE
Un-pinout
JTAG nTRST
JTAG reset
122
JTAG nTRST
JTAG TCK
JTAG clock
120
JTAG TCK
JTAG TDI
JTAG data input
118
JTAG TDI
JTAG TDO
JTAG data output
116
JTAG TDO
JTAG TMS
JTAG mode select
114
JTAG TMS