SPRAC31
February 2019
TMS320C5505
,
TMS320C5515
,
TMS320C5535
TMS320C5505/15/35/45 schematic checklist
Trademarks
1
Introduction
1.1
Device Applicability
1.2
Links to TI Hardware Designs Based on C5505/15/35/45
1.2.1
C5505 eZdsp
1.2.2
C5515 eZdsp
1.2.3
C5515 EVM
1.2.4
C5535 eZdsp
1.2.5
C5535 Audio Capacitive Touch BoosterPack
1.2.6
C5545 BoosterPack (BOOST5545ULP)
1.3
EVM vs Data Sheet
2
Complimentary Resources
3
Recommendations Specific to C5504/05/14/15/32/33/34/35/45
3.1
Before You Begin
3.1.1
Documentation
3.1.2
Pin Out
3.2
Unused Pins
3.3
Unused Power Rails
3.3.1
If USB is not Used
3.3.2
If RTC is not Used
3.3.3
If EMIF is not Used (not applicable to C5532/33/34/35 or C5545)
3.3.4
If an On-Chip LDO Output is not Used
3.4
Clocking
3.5
OSC Internal Oscillator Clock Source
3.6
Power
3.6.1
CVDDRTC Must be Always Supplied - [0.998 V - 1.43 V]
3.6.2
LDOI Must be Always Supplied
3.6.3
On-Chip LDOs
3.6.4
Recommended PMIC
3.6.5
DVDDIO Supply ON While CVDD OFF
3.6.6
Power Sequencing
3.6.7
Voltage Rails of IO Pins
3.7
Decoupling Capacitors
3.8
LDO Output Decoupling Capacitors
3.9
Digital GND, Analog GND, Local GND
3.9.1
Recommended USB Supplies
3.10
Reset
3.11
USB
3.12
I2C
3.13
I2S
3.14
RTC
3.15
SAR ADC
3.16
Pin Muxing
3.17
Signal Visibility
3.18
EMIF (not applicable to C5532/33/34/35 or C5545)
3.19
JTAG
3.20
Bootloader
4
References
3.15
SAR ADC
SAR ADC has better absolute accuracy when accurate external voltage reference (1.3 V) used instead of internal refs from Bandgap (0.8 V or 1.0 V)
Set REFAVDDSEL bit in SARPINCTRL register to 1: Reference Voltage set to Analog Voltage (VDDA_ANA supply)
Design GPAIN inputs so they are in the range of VDDA_ANA voltage (0 V - 1.3 V)
GPAIN pin input impedance = 1MΩ
Voltage measurements are less accurate if impedance on pin approaches the input impedance of the device