Analog Devices ADAU1961 Manual page 68

ADAU1961
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
CDATP[1:0]
Table 65. Control Port Pad Control 0 Register
Bits Bit Name
[7:6] CDATP[1:0]
[5:4] CLCHP[1:0]
[3:2] SCLP[1:0]
[1:0] SDAP[1:0]
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 I
Bit 7 Bit 6
Table 66. Control Port Pad Control 1 Register
Bits Bit Name
0 SDASTR
Downloaded from Elcodis.com electronic components distributor
Bit 5 Bit 4
CLCHP[1:0]
Description
CDATA pad pull-up/pull-down configuration.
Setting
00
01
10
11
CLATCH pad pull-up/pull-down configuration.
Setting
00
01
10
11
SCL/CCLK pad pull-up/pull-down configuration.
Setting
00
01
10
11
SDA/COUT pad pull-up/pull-down configuration.
Setting
00
01
10
11
Bit 5 Bit 4
Reserved
Description
SDA/COUT pin drive strength.
0 = low (default).
1 = high.
Bit 3 Bit 2
SCLP[1:0]
Configuration
Pull-up
Reserved
None (default)
Pull-down
Configuration
Pull-up
Reserved
None (default)
Pull-down
Configuration
Pull-up
Reserved
None (default)
Pull-down
Configuration
Pull-up
Reserved
None (default)
Pull-down
2
C mode, if needed.
Bit 3 Bit 2
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Bit 1 Bit 0
SDAP[1:0]
Bit 1 Bit 0
SDASTR