TAS2780 datasheet(67/97 Pages) TI

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Bit

Field

Type

Reset

Description

6-3

FS_RATIO[3:0]

Detected SBCLK to FSYNC ratio.

00h = 16

01h = 24

02h = 32

03h = 48

04h = 64

05h = 96

06h = 128

07h = 192

08h = 256

09h = 384

0Ah = 512

0Bh = 125

0Ch = 250

0Dh = 500

0Eh = Reserved

0F = Invalid ratio

2-0

FS_RATE[2:0]

Detected sample rate of TDM bus.

0h - 3h = Reserved

4h = 44.1/48 KHz

5h = 88.2/96 kHz

6h = Reserved

7h = Error condition

8.9.91 LV_EN_CFG (page=0x00 address=0x6A) [reset=12h]

Bit

Field

Type

Reset

Description

7-6

CDS_DLY[1:0]

Delay (1/fs) of the Class-D Y-bridge switching with respect to the

input signal

0h = 8.1(NG enabled,48ksps), 6.1(NG disabled,48ksps)

0h = 12.6(NG enabled,96ksps), 9.6(NG disabled,96ksps)

1h = 7.1(NG enabled,48ksps), 5.1(NG disabled,48ksps),

1h = 10.6(NG enabled,96ksps), 7.6(NG disabled,96ksps)

2h = 6.1(NG enabled,48ksps), 4.1(NG disabled,48ksps)

2h = 8.5(NG enabled,96ksps), 5.6(NG disabled,96ksps)

3h = 5.6(NG enabled,48ksps), 3.6(NG disabled,48ksps

3h = 7.6(NG enabled,96ksps), 4.6(NG disabled,96ksps)

5-4

LVS_DLY[1:0]

Delay (1/fs) of the BYP_EN signaling with respect to the input

signal

0h = 7.8(NG enabled,48ksps), 5.8(NG disabled,48ksps)

0h = 12.1(NG enabled,96ksps), 9.1(NG disabled,96ksps)

1h = 6.8(NG enabled,48ksps), 4.8(NG disabled,48ksps),

1h = 10.1(NG enabled,96ksps), 7.1(NG disabled,96ksps)

2h = 5.8(NG enabled,48ksps), 3.8(NG disabled,48ksps)

2h = 8.1(NG enabled,96ksps), 5.1(NG disabled,96ksps)

3h = 5.1(NG enabled,48ksps), 3.1(NG disabled,48ksps

3h = 6.6(NG enabled,96ksps), 3.6(NG disabled,96ksps)

3-0

LVS_RTH[3:0]

Relative threshold for Low-Voltage Signaling. Headroom is from

current VBAT1S voltage

0h = 0.5 V

1h = 0.6 V

2h = 0.7 V

...

Eh = 1.9 V

Fh = 2 V

8.9.92 NG_CFG2 (page=0x00 address=0x6B) [reset=43h]

Bit

Field

Type

Reset

Description

Reserved

CONV_VBAT

Convert the VBAT1S when BOP source is PVDD

0h = No VBAT1S conversion

1h = VBAT1S conversion is performed by SAR

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TAS2780

SLOSE75A – FEBRUARY 2022 – REVISED JUNE 2022

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