AD1885
Sample Rate 0 (Index 78h)
Reg
Name
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
Num
(32h)/78h Sample Rate 0 SR015 SR014 SR013 SR012 SR011 SR010 SR09 SR08 SR07 SR06 SR05 SR04 SR03 SR02 SR01 SR00 BB80h
Note: 32h is an alias for 78h. The VRA bit in register 2Ah must be set for the alias to work; if a zero is written to VRA, both
sample rates are reset to 48 kHz.
SR0[15:0]
Writing to this register allows the user to program the sampling frequency from 7 kHz (1B58h) to 48 kHz (BB80h)
in 1 Hertz increments. Programming a value greater than 48 kHz or less than 7 kHz may cause unpredictable
results.
Sample Rate 1 (Index 7Ah)
Reg
Num
Name
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
(2Ch)/7Ah Sample Rate 1 SR115 SR114 SR113 SR112 SR111 SR110 SR19 SR18 SR17 SR16 SR15 SR14 SR13 SR12 SR11 SR10 BB80h
Note: 2Ch is an alias for 7Ah. The VRA bit in register 2Ah must be set for the alias to work; if a zero is written to VRA, both sample
rates are reset to 48 kHz.
SR1[15:0]
Writing to this register allows the user to program the sampling frequency from 7 kHz (1B58h) to 48 kHz (BB80h)
in 1 Hertz increments. Programming a value greater than 48 kHz or less than 7 kHz may cause unpredictable results.
Vendor ID Registers (Index 7Ch–Eh)
Reg
Num
Name
D15 D14 D13 D12 D11 D10 D9
D8
F0
D7
S7
D6
S6
D5
S5
D4
S4
D3
S3
D2
S2
D1
S1
D0
S0
Default
4144h
7Ch Vendor ID1 F7
F6
F5
F4
F3
F2
F1
S[7:0]
F[7:0]
This register is ASCII encoded to “S.”
This register is ASCII encoded to “D.”
Reg
Num
Name
D15 D14 D13 D12 D11 D10 D9
D8
T0
D7
D6
D5
D4
D3
D2
D1
D0
Default
7Eh Vendor ID2 T7
T6
T5
T4
T3
T2
T1
REV7 REV6 REV5 REV4 REV3 REV2 REV1 REV0 5360h
T[7:0]
This register is ASCII encoded to “S.”
Revision Register field contains the revision number.
REV[7:0]
These bits are read-only and should be verified before accessing vendor defined features.
REV. 0
–21–
ADI [ ADI ]
