ADAU1781 Analog Devices, ADAU1781 Datasheet - Page 78

• Manufacturer Part Number: ADAU1781
• Description: SigmaDSP Low-noise Stereo Audio Codec for Portable Applications
• Manufacturer: Analog Devices

Specifications of ADAU1781

• Instructions/cycles: 1024
• Digital I/o Channels: 8/8
• Analog I/o Channels: 2/2
• Product Description: SigmaDSP low-noise stereo audio codec for portable applications

ADAU1781
Register 16431 (0x402F), Communication Port Pad
Control 0
Bits[7:6], CDATA Pad Pull-Up/Pull-Down
These bits enable or disable a weak pull-up or pull-down device
on the pad. The effective resistance of the pull-up or pull-down
is nominally 240 kΩ.
Bits[5:4], CLATCH
These bits enable or disable a weak pull-up or pull-down device
on the pad. The effective resistance of the pull-up or pull-down
is nominally 240 kΩ.
Table 67. Communication Port Pad Control 0 Register
Bits
[7:6]
[5:4]
[3:2]
[1:0]
Description
CDATA pad pull-up/pull-down
00: pull-up
01: reserved
10: none (default)
11: pull-down
CLATCH
00: pull-up
01: reserved
10: none (default)
11: pull-down
SCL/CCLK pad pull-up/pull-down
00: pull-up
01: reserved
10: none (default)
11: pull-down
SDA/COUT pad pull-up/pull-down
00: pull-up
01: reserved
10: none (default)
11: pull-down
Pad Pull-Up/Pull-Down
pad pull-up/pull-down
Rev. B | Page 78 of 92
Bits[3:2], SCL/CCLK Pad Pull-Up/Pull-Down
These bits enable or disable a weak pull-up or pull-down device
on the pad. The effective resistance of the pull-up or pull-down
is nominally 240 kΩ.
Bits[1:0], SDA/COUT Pad Pull-Up/Pull-Down
These bits enable or disable a weak pull-up or pull-down device
on the pad. The effective resistance of the pull-up or pull-down
is nominally 240 kΩ.
Default
11
00
11
11