WAN_0143

w

Rev 1.0 March 2004

3

INTERFACE TIMING

MASK

Frames

(SYNC)

AUXADC Conversion

(MASK = 11)

AUXADC Conversion

(MASK = 10)

AUXADC Conversion

(MASK = 01)

Conv

Delay

Conv

Conv

Conv

Conv

Conv

t

DEL

t

DEL

t

DEL

t

DEL

Delay

Delay

Conv

Delay

Conv

Delay

Conv

Delay

Conv

Delay

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Frame Delay set by register 76h

0

288

frames

MASK

BCLK

SYNC

Figure 2 MASK Delay Timings

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Setup time from MASK edge to SYNC

1

162.8

ns

Hold time of MASK level from SYNC

rising edge.

81.4

ns

Note:

1.

There must be at least two BCLK's between the rising edge of MASK and the rising edge of SYNC. Therefore, once MASK is

high there must be at least two BCLK rising edges prior to the SYNC pulse.