ADS5547 datasheet(16/57 Pages) TI

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SERIAL REGISTER MAP

ADS5527

SLWS196A – DECEMBER 2006 – REVISED MAY 2007

Table 8 gives a summary of all the modes that can be programmed through the serial interface.

Table 8. Summary of Functions Supported by Serial Interface (1)(2)

ADDRESS

IN HEX

A7 - A0

OUTPUT DATA

POSITION

OUTPUT CLOCK POSITION PROGRAMMABILITY

PROGRAMMABILITY

<DF>

<STBY>

ENABLE LOW

DATA FORMAT -

GLOBAL

SAMPLING

2's COMP or

POWER

FREQUENCY

STRAIGHT

DOWN

OPERATION

BINARY

<TEST PATTERN> – ALL 0S, ALL 1s,

TOGGLE, RAMP, CUSTOM PATTERN

<GAIN> GAIN PROGRAMMING <GAIN> - 1 dB to 6 dB

<CUSTOM A> CUSTOM PATTERN (D7 TO D0)

<CUSTOM B> CUSTOM PATTERN (D13 TO D8)

<CLKIN GAIN> INPUT CLOCK BUFFER GAIN PROGRAMMABILITY

<RST>

<ODI> OUTPUT DATA INTERFACE

SOFTWARE

- DDR LVDS or PARALLEL CMOS

RESET

<REF>

INTERNAL or

<SCALING> POWER SCALING

EXTERNAL

REFERENCE

INTERNAL TERMINATION – DATA

LVDS CURRENT

INTERNAL TERMINATION – OUTPUT CLOCK

OUTPUTS

PROGRAMMABILITY

LVDS CURRENT

DOUBLE

(1)

The unused bits in each register (shown by blank cells in above table) must be programmed as ‘0’.

(2)

Multiple functions in a register can be programmed in a single write operation.

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