User`s manual

Pin Assignments
CS485xx Hardware User’s Manual
DS734UM7 Copyright 2009 Cirrus Logic, Inc. 9-18
Table 9-10 shows the names and functions for each pin of the CS48540.
36 GPIO11 General Purpose Input/Output 1. SCP_CLK
1. SPI/I
2
C Control Port Clock
3.3V (5V tol)
BiDi/OD IN Y
37 VDDIO3 I/O power supply voltage 3.3V
PWR
38 GPIO8 General Purpose Input/Output 1. SCP_CS 1. SPI Chip Select 3.3V (5V tol)
BiDi IN Y
39 GPIO12 General Purpose Input/Output 1. SCP_IRQ 1. Serial Control Port Data Ready Interrupt
Request
3.3V (5V tol)
BiDi/OD IN Y
40 GNDIO4 I/O ground 0V
PWR
41 GPIO13 General Purpose Input/Output 1. SCP_BSY
2. EE_CS
1. Serial Control Port Input Busy
2. EEPROM Boot Chip Select.
3.3V (5V tol)
BiDI/OD IN Y
42 VDDD3 Core power supply voltage 1.8V
PWR
43 XTAL_OUT Buffered Reference Clock
Input/Crystal Oscillator Input
3.3V (5V tol)
BiDi
44 XTI Reference Clock Input/Crystal
Oscillator Input
3.3V (5V tol)
ANA
45 XTO Crystal Oscillator Output 3.3V
ANA
46 GNDA PLL ground 3.3V
PWR
47 PLL_REF_RES Current Reference Output for
PLL. Connect to resistor.
3.3V
ANA
48 VDDA PLL power. 3.3V
PWR
Table 9-10. Pin Assignments of CS48540
LQFP-48
Pin # Function 1
(Default)
Description of Default
Function
Secondary Functions
Description of Secondary Functions Pwr Type
Reset
State
Pullup
at
Reset
1 TEST Test 3.3V (5V tol)
IN
2 RESET Active Low Chip Reset 3.3V (5V tol)
IN
3 DBDA Debug Data 3.3V (5V tol)
BiDi IN Y
4 GNDD1 Core ground 0V
PWR
5 DBCK Debug Clock 3.3V (5V tol)
BiDi IN Y
6 DAI1_LRCLK PCM Audio Input Sample
Rate (Left/Right) Clock
3.3V (5V tol)
IN Y
7 GNDIO1 I/O ground 0V
PWR
8 DAI1_SCLK PCM Audio Input Bit Clock 3.3V (5V tol)
IN Y
9 GNDD2 Core ground 0V
PWR
10 GPIO16 General Purpose Input/Output 1. DAI1_DATA0 1. Digital Audio Input Data 3.3V (5V tol)
BiDi IN Y
11 GPIO0 General Purpose Input/Output 1. DAI1_DATA1 1. Digital Audio Input Data 3.3V (5V tol)
BiDi IN Y
12 VDDIO1 I/O power supply voltage 3.3V
PWR
13 GPIO1 General Purpose Input/Output 1. DAI1_DATA2 1. Digital Audio Input Data 3.3V (5V tol)
BiDi IN Y
14 GPIO2 General Purpose Input/Output 3.3V (5V tol)
BiDi IN Y
15 GPIO17 General Purpose Input/Output 1. DAI2_DATA0 1. Digital Audio Input Data 3.3V (5V tol)
BiDi IN Y
16 VDDD1 Core power supply voltage 1.8V
PWR
17 GPIO14 General Purpose Input/Output 1. DAI2_LRCLK 1. PCM Audio Input Sample Rate (Left/
Right) Clock
3.3V (5V tol)
BiDi/OD IN Y
18 GPIO15 General Purpose Input/Output 1. DAI2_SCLK PCM Audio Input Bit Clock 3.3V (5V tol)
BiDi IN Y
19 GNDIO2 I/O ground 0V
PWR
20 DAO1_DATA0 Digital Audio Output 0 1. HS0 1. Hardware Strap Mode Select. 3.3V (5V tol)
BiDi IN
21 DAO_LRCLK PCM Audio Sample Rate
Clock
3.3V (5V tol)
BiDi IN Y
22 GNDD3 Core ground 0V
PWR
23 DAO_SCLK PCM Audio Output Bit Clock 3.3V (5V tol)
BiDi IN Y
24 VDDIO2 I/O power supply voltage 3.3V
PWR
Table 9-9. Pin Assignments of CS48560 (Continued)
LQFP-48
Pin # Function 1
(Default)
Description of Default
Function
Secondary Functions
Description of Secondary Functions Pwr Type
Reset
State
Pullup
at
Reset