AD6679 datasheet(66/81 Pages) AD

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AD6679

Data Sheet

Rev. B | Page 66 of 81

CLK±

INPUT

SYNC±

INPUT

VALID

REG 0x128[7:4]

FLIP FLOP

HOLD (MIN)

FLIP FLOP

HOLD (MIN)

FLIP FLOP

SETUP (MIN)

–1

–2

–3

–4

–5

–6

–7

–8

Figure 86. SYNC± Hold Detector

Table 37 shows the description of the contents of Register 0x128 and how to interpret them.

Table 37. SYNC± Setup and Hold Monitor, Register 0x128

Status

Description

0x0

0x0 to 0x7

Possible setup error; the smaller this number, the smaller the setup

margin

0x0 to 0x8

0x8

No setup or hold error (best hold margin)

0x8

0x9 to 0xF

No setup or hold error (best setup and hold margin)

0x8

0x0

No setup or hold error (best setup margin)

0x9 to 0xF

0x0

Possible hold error; the larger this number, the smaller the hold

margin

0x0

Possible setup or hold error

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