Analog Devices AD9739 Manual page 34

4-bit, 2500 msps, rf digital-to-analog converter
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AD9739
Bit Name
Read/Write
RCVR_FE_ON
Read
RCVR_LST_LCK
Read
RCVR_LCK
Read
Table 26. Cross Controller Registers (Register 0x22, Register 0x23)
Register
1
Name
Address
Bit 7
CROSS_
0x22
34
N/A
CNT1
CROSS_
0x23
35
N/A
CNT2
1
The two-digit number is the decimal representation of the address.
Table 27. Cross Controller Register Bit Descriptions
Bit Name
Read/Write
CLKP_OFFSET[3:0]
Read/write
DIR_P
Read/Write
CLKN_OFFSET[3:0]
Read/write
DIR_N
Read/Write
Table 28. MU Controller Registers (Register 0x24, Register 0x25, Register 0x26, Register 0x27, Register 0x28, Register 0x29,
Register 0x2A)
Register
1
Name
Address
Bit 7
PHS_DET
0x24
36
N/A
MU_DUTY
0x25
37
MU_DUTYAUTO_EN
MU_CNT1
0x26
38
N/A
MU_CNT2
0x27
39
MUDEL[0]
MU_CNT3
0x28
40
MUDEL[8]
MU_CNT4
0x29
41
Search_Tol
MU_STAT1
0x2A
42
N/A
1
The two-digit number is the decimal representation of the address.
Description
0: indicates that the FINDEDGE state machine is not active.
1: indicates that the FINDEDGE state machine is active.
0: lock has not been lost.
1: lock has been lost at some point.
0: the receiver controller is not locked.
1: the receiver controller is locked.
Bit 6
Bit 5
N/A
N/A
N/A
N/A
Description
0x0: programmable to vary the common-mode voltage for DACCLKP (for best ac
performance, the optimal setting is 15).
O: common-mode voltage on DACCLK_P decreases with the programmed value of
CLKP_OFFSET[3:0].
1: common-mode voltage on DACCLK_P increases with the programmed value of
CLKP_OFFSET[3:0] (for the best ac, the optimal setting is 0).
0x0: programmable to vary the common-mode voltage for DACCLKN (for best ac
performance, the optimal setting is 15).
O: common-mode voltage on DACCLK_N decreases with the programmed value
of CLKN_OFFSET[3:0].
1: common-mode voltage on DACCLK_N increases with the programmed value of
CLKN_OFFSET[3:0] (for the best ac, the optimal setting is 0).
Bit 6
Bit 5
N/A
PHS_DETAUTO_EN
POS/NEG
ADJ[5]
Slope
Mode[1]
SrchMode[1]
SrchMode[0]
MUDEL[7]
MUDEL[6]
Retry
ContRst
N/A
N/A
Rev. A | Page 34 of 56
Bit 4
Bit 3
DIR_P
CLKP_
OFFSET[3]
DIR_N
CLKN_
OFFSET[3]
Bit 4
Bit 3
CMP_BST
Bias[3]
ADJ[4]
ADJ[3]
Mode[0]
Read
SetPhs[4]
SetPhs[3]
MUDEL[5]
MUDEL[4]
Guard[4]
Guard[3]
N/A
N/A
Reset Value for
Write Register
0
0
0
Bit 2
Bit 1
CLKP_
CLKP_
OFFSET[2]
OFFSET[1]
CLKN_
CLKN_
OFFSET[2]
OFFSET[1]
Reset Value for
Write Register
0x0
0
0x0
0
Bit 2
Bit 1
Bias[2]
Bias[1]
ADJ[2]
ADJ[1]
Gain[1]
Gain[0]
SetPhs[2]
SetPhs[1]
MUDEL[3]
MUDEL[2]
Guard[2]
Guard[1]
N/A
MU_LOST
Bit 0
CLKP_
OFFSET[0]
CLKN_
OFFSET[0]
Bit 0
Bias[0]
ADJ[0]
Enable
SetPhs[0]
MUDEL[1]
Guard[0]
MU_LKD

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