Inc. Recording Equipment User Manual
Table Of Contents
- Features
- Applications
- General Description
- Basic Block Diagram
- Revision History
- Specifications
- Absolute Maximum Ratings
- Pin Configuration and Function Descriptions
- Typical Performance Characteristics
- Input/Output Termination Recommendations
- Theory of Operation
- Thermal Performance
- Power-Up
- Power Supply Partitioning
- Serial Control Port
- I/O Register Map
- I/O Register Descriptions
- Serial Port Configuration (Register 0x0000 to Register 0x0005)
- Power-Down and Reset (Register 0x0010 to Register 0x0013)
- System Clock (Register 0x0020 to Register 0x0022)
- CMOS Output Divider (S-Divider) (Register 0x0100 to Register 0x0106)
- Frequency Tuning Word (Register 0x01A0 to Register 0x01AD)
- Register 0x01A0 to Register 0x01A5—Reserved
- Register 0x01A6—FTW0 (Frequency Tuning Word)
- Register 0x01A7—FTW0 (Frequency Tuning Word) (Continued)
- Register 0x01A8—FTW0 (Frequency Tuning Word) (Continued)
- Register 0x01A9—FTW0 (Frequency Tuning Word) (Continued)
- Register 0x01AA—FTW0 (Frequency Tuning Word) (Continued)
- Register 0x01AB—FTW0 (Frequency Tuning Word) (Continued)
- Register 0x01AC—Phase
- Register 0x01AD—Phase (Continued)
- Doubler and Output Drivers (Register 0x0200 to Register 0x0201)
- Calibration (User-Accessible Trim) (Register 0x0400 to Register 0x0410)
- Harmonic Spur Reduction (Register 0x0500 to Register 0x0509)
- Outline Dimensions
AD9912
Rev. D | Page 29 of 40
06763-048
CSB
SCLK
SDIO
t
HIGH
t
LOW
t
CLK
t
S
t
DS
t
DH
t
H
BIT N BIT N + 1
Figure 56. Serial Control Port Timing—Write
Table 11. Definitions of Terms Used in Serial Control Port Timing Diagrams
Parameter Description
t
CLK
Period of SCLK
t
DV
Read data valid time (time from falling edge of SCLK to valid data on SDIO/SDO)
t
DS
Setup time between data and rising edge of SCLK
t
DH
Hold time between data and rising edge of SCLK
t
S
Setup time between CSB and SCLK
t
H
Hold time between CSB and SCLK
t
HI
Minimum period that SCLK should be in a logic high state
t
LO
Minimum period that SCLK should be in a logic low state