ADAU1961WBCPZ-R7 datasheet(69/77 Pages) AD

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ADAU1961

Data Sheet

Rev. A | Page 68 of 76

R40: Control Port Pad Control 0, 16,431 (0x402F)

The optional pull-up/pull-down resistors are nominally 250 kΩ. When enabled, these pull-up/pull-down resistors set the control port

signals to a defined state when the signal source becomes three-state.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

CDATP[1:0]

CLCHP[1:0]

SCLP[1:0]

SDAP[1:0]

Table 65. Control Port Pad Control 0 Register

R41: Control Port Pad Control 1, 16,432 (0x4030)

With IOVDD set to 3.3 V, the low and high drive strengths of the SDA/COUT pin are approximately 2.0 mA and 4.0 mA, respectively.

The high drive strength mode may be useful for generating a stronger ACK pulse in I2C mode, if needed.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reserved

SDASTR

Table 66. Control Port Pad Control 1 Register

Bits

Bit Name

Description

[7:6]

CDATP[1:0]

CDATA pad pull-up/pull-down configuration.

Setting

Configuration

Pull-up

Reserved

None (default)

Pull-down

[5:4]

CLCHP[1:0]

CLATCH pad pull-up/pull-down configuration.

Setting

Configuration

Pull-up

Reserved

None (default)

Pull-down

[3:2]

SCLP[1:0]

SCL/CCLK pad pull-up/pull-down configuration.

Setting

Configuration

Pull-up

Reserved

None (default)

Pull-down

[1:0]

SDAP[1:0]

SDA/COUT pad pull-up/pull-down configuration.

Setting

Configuration

Pull-up

Reserved

None (default)

Pull-down

Bits

Bit Name

Description

SDASTR

SDA/COUT pin drive strength.

0 = low (default).

1 = high.

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