User guide

DS810UM6 Copyright 2013 Cirrus Logic P-17
CS4970x4 Pin Assignments
CS4953x4/CS4970x4 System Designer’s Guide
117 - GPIO3 General Purpose Input/Output
1. PCP_D3
2. PCP_AD3
1. Parallel Control Port Data Bus
2. Parallel Control Port Multiplexed
Address and Data Bus
3.3V (5V tol) BiDir IN
- 10 GPIO3 General Purpose Input/Output 3.3V (5V tol) BiDir IN
118 - GPIO2 General Purpose Input/Output
1. PCP_D2
2. PCP_AD2
1. Parallel Control Port Data Bus
2. Parallel Control Port Multiplexed
Address and Data Bus
3.3V (5V tol) BiDir IN
- 11 GPIO2 General Purpose Input/Output 1. UART_TXD 1. UART Output 3.3V (5V tol) BiDir IN
119 12 VDD7 Core power supply voltage 1.8V PWR
120 - GPIO1 General Purpose Input/Output
1. PCP_D1
2. PCP_AD1
1. Parallel Control Port Data Bus
2. Parallel Control Port Multiplexed
Address and Data Bus
3.3V (5V tol) BiDir IN
13 GPIO1 General Purpose Input/Output 1. UART_RXD 1. UART Input 3.3V (5V tol) BiDir IN
121 - GPIO0 General Purpose Input/Output
1. PCP_D0
2. PCP_AD0
1. Parallel Control Port Data Bus
2. Parallel Control Port Multiplexed
Address and Data Bus
3.3V (5V tol) BiDir IN
14 GPIO0 General Purpose Input/Output
1. UART_CLK
2. EE_CS
1. UART Clock 3.3V (5V tol) BiDir IN
122 15 GNDD7 Core ground 0V PWR
123 16 XTAL_OUT
Buffered Reference Clock Input/
Crystal Oscillator Input
3.3V (5V tol) OUT
124 17 XTI
Reference Clock Input/Crystal
Oscillator Input
3.3V (5V tol) ANA
125 18 XTO Crystal Oscillator Output 1 3.3V ANA
126 19 GNDA PLL ground 1.8V PWR
127 - NC Do Not Connect on PCB 1.8V ANA
128 20
PLL_REF_RE
S
Current Reference Output for PLL.
Connect to resistor.
3.3V ANA
129 21 VDDA PLL power. 3.3V PWR
130 22 VDD8 Core power supply voltage 1.8V PWR
131 23 GPIO14 General Purpose Input/Output
1. DAI1_DATA3
2. DSD3
1. PCM Audio Input Data 3
2. DSD Audio Input Data 3
3.3V (5V tol) BiDir IN
132 24 GPIO13 General Purpose Input/Output
1. DAI1_DATA2
2. DSD2
1. PCM Audio Input Data 2
2. DSD Audio Input Data 2
3.3V (5V tol) BiDir IN
133 25 GNDD8 Core ground 0V PWR
134 26 GPIO12 General Purpose Input/Output
1. DAI1_DATA1
2. DSD1
1. PCM Audio Input Data 1
2. DSD Audio Input Data 1
3.3V (5V tol) BiDir IN
135 27 DAI1_DATA0 PCM Audio Input Data 0
1.TM0
2. DSD0
1.
2. DSD Audio Input Data 0
3.3V (5V tol) In
136 28 VDDIO8 I/O power supply voltage 3.3V PWR
137 29 DAI1_SCLK PCM Audio Input Bit Clock DSD_CLK DSD Audio Input Clock 3.3V (5V tol) In
Table P-10. CS4970x4 Pin Assignments (Continued) for 144-Pin and 128-Pin Packages (Continued)
LQFP-
144
Pin #
LQFP-
128
Pin #
Function 1
(Default)
Description of Default Function Secondary Functions Description of Secondary
Functions
Pwr Type
Reset
State