Cirrus Logic CS4385A - Manual (Page 37)

DS837F2 37
CS4385A
7. REGISTER DESCRIPTION
Note: All registers are read/write in I²C Mode and write only in SPI, unless otherwise noted.
7.1 Chip I.D. and Revision (Address 01h)
7.1.1 Chip I.D. [Read Only]
10001- CS4385A
7.1.2 Chip Revision [Read Only]
010 - Revision B1
Function:
This read-only register can be used to identify the model and revision number of the device.
7.2 Mode Control 1 (Address 02h)
7.2.1 Control Port Enable (CPEN)
Default = 0
0 - Disabled
1 - Enabled
Function:
This bit defaults to 0, allowing the device to power-up in Hardware Mode. Software Mode can be accessed
by setting this bit to 1. This will allow the operation of the device to be controlled by the registers, and the
pin definitions will conform to Software Mode. To accomplish a clean power-up, the user should write this
bit within 10 ms following the release of Reset.
7.2.2 Freeze Controls (FREEZE)
Default = 0
0 - Disabled
1 - Enabled
Function:
This function allows modifications to be made to the registers without the changes taking effect until the
FREEZE is disabled. To make multiple changes in the control port registers take effect simultaneously,
enable the FREEZE Bit, make all register changes; then Disable the FREEZE bit.
7 6 5 4 3 2 1 0
CHIPID4 CHIPID3 CHIPID2 CHIPID1 CHIPID0 REV2 REV1 REV0
1 0 0 0 1 - - -
7 6 5 4 3 2 1 0
CPEN FREEZE DSD/PCM DAC4_DIS DAC3_DIS DAC2_DIS DAC1_DIS PDN
0 0 0 0 0 0 0 1