ICE1230 IC Ensemble, ICE1230 Datasheet - Page 21

• Manufacturer Part Number: ICE1230
• Description: ac 97 Audio Codec
• Manufacturer: IC Ensemble

Preliminary
Register Description ( continued... )
Power Down and Status Register (Index 26h)
PR[5:0]
Test Control Register (Index 5Ah)
Rev. 1.3, 9/21/98
D15
D15
–
–
D14
D14
–
–
D13
PR5
D13
–
Power Down Mode Bits
These read/write bits are used to control the power down states of the ICE 1230. Each
power down function bit is enabled by setting the respective bit high. The power down
modes controlled by each bit is described in the table below:
Status (READ Only) bits
These bits are used to monitor the readiness of some sections of the ICE 1230. Reading a
“1” from any of these bits would be an indication of a “ready” state.
Test Mode Bits
These four read/write bits are used for testing the digital modes of the audio codec.
D12
PR4
D12
–
DAC
ADC
PR0
PR1
PR2
PR3
PR4
PR5
REF
ANL
Bit
Bit
D11
PR3
D11
–
D10
PR2
D10
–
Function
ADC and Mux Powerdown
DAC Powerdown
Mixer Powerdown (V
Mixer Powerdown (V
AC Link Powerdown (BIT_CLK off)
Internal Clock Disabled
Status Bit
V
Mixer, Mux and Volume Controls ready
DAC ready to accept data
ADC ready to transmit data
REF
PR1
at nominal level
D9
D9
–
PR0
D8
D8
–
ADC1 ENL ADC2 DAC
REF
REF
D7
D7
–
on)
off)
D6
D6
–
D5
D5
–
D4
D4
–
REF
D3
D3
–
ANL
D2
D2
–
DAC
D1
D1
–
ICE 1230
ADC
D0
D0
–
Default
Default
0000h
0000h
21