Page 0 Registers
Page 0 / Register 52: GPIO/MFP5 Control Register (** Availble only for WCSP Package) - 0x00 /
0x34 (continued)
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D5-D2
R/W
0000
GPIO Control
0000: GPIO input/output disabled.
0001: GPIO input is used for secondary audio interface, digital microphone input or clock input.
Configure other registers to choose the functionality of GPIO input
0010: GPIO is general purpose input
0011: GPIO is general purpose output
0100: GPIO output is CLKOUT
0101: GPIO output is INT1
0110: GPIO output is INT2
0111: GPIO output is ADC_WCLK for Audio Interface
1000: GPIO output is secondary bit-clock for Audio Interface
1001: GPIO output is secondary word-clock for Audio Interface
1010: GPIO output is clock for digital microphone
1011-1111: Reserved. Do not use.
D1
R
X
GPIO Input Pin state, used along with GPIO as general purpose input
D0
R/W
0
GPIO as general purpose output control
0: GPIO pin is driven to '0' in general purpose output mode
1: GPIO pin is driven to '1' in general purpose output mode
5.2.49
Page 0 / Register 53: MFP2 Function Control Register - 0x00 / 0x35
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7-D5
R
000
Reserved. Write only default values
D4
R/W
1
MFP2 Bus Keeper Control
0: MFP2 Bus Keeper Enabled
1: MFP2 Bus Keeper Disabled
D3-D1
R/W
001
MFP2 MUX Control
000: MFP2 disabled
001: MFP2 is Primary DOUT (Loopback data)
010: MFP2 is General Purpose Output
011: MFP2 is CLKOUT
100: MFP2 is INT1
101: MFP2 is INT2
110: MFP2 is Secondary BCLK
111: MFP2 is Secondary WCLK
D0
R/W
0
MFP2 as General Purpose Output
0: MFP2 General Purpose Output is '0'
1: MFP2 General Purpose Output is '1'
5.2.50
Page 0 / Register 54: DIN/MFP1 Function Control Register - 0x00 / 0x36
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7-D3
R
0 0000
Reserved. Write only reserved values
D2-D1
R/W
01
DIN function control
00: DIN pin is disabled
01: DIN is enabled for Primary Data Input or Digital Microphone Input or General Purpose Clock
input
10: DIN is used as General Purpose Input
11: Reserved. Do not use
D0
R
X
Value of DIN input pin. To be used when for General Purpose Input
5.2.51
Page 0 / Register 55: MISO/MFP4 Function Control Register - 0x00 / 0x37
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7-D5
R
000
Reserved. Write only default values
90
Register Map
SLAU434 – May 2012
Copyright © 2012, Texas Instruments Incorporated