ad1816a Analog Devices, Inc., ad1816a Datasheet - Page 14

• Manufacturer Part Number: ad1816a
• Description: Soundport Controller
• Manufacturer: Analog Devices, Inc.

AD1816A
Hardware Volume Pins
Pin Name
VOL_DN*
VOL_UP*
Control Pins
Pin Name
XCTL0*
PCLKO*
XCTL1*
RING*
Power Supplies
Pin Name
V
GNDA
V
GND
Optional EEPROM Pins
Pin Name
EE_CLK
EE_DATA
*The position of this pin location/function is dependent on the EEPROM data.
CC
DD
PQFP
2, 99, 100
1, 98
PQFP
68
68
69
69
PQFP
33
34
23, 62, 71,
89, 95
3*, 24, 65,
70, 84, 90,
96, 99*, 100* 94, 97*, 98*
PQFP
58
57
TQFP
97, 98, 100 I
96, 99
TQFP
66
66
67
67
TQFP
31
32
21, 60, 69,
87, 93
1*, 22, 63,
68, 82, 88,
TQFP
56
55
I/O
I
I/O
O
O
O
I
I/O
I
I
I
I
I/O
O
I/O
Description
Master Volume Down. Modifies output level on pins L_OUT and R_OUT.
When asserted LO, decreases Master Volume by 1.5 dB/sec. Must be asserted at
least 25 ms to be recognized. When asserted simultaneously with VOL_UP, out-
put is muted. Output level modification reflected in indirect register [41].
Master Volume Up. Modifies output level on pins L_OUT and R_OUT. When
asserted LO, increases Master Volume by 1.5 dB/sec. Must be asserted at least
25 ms to be recognized. When asserted simultaneously with VOL_UP, output is
muted. Output level modification reflected in indirect register [41].
Description
External Control 0. The state of this pin (TTL HI or LO) is reflected in codec
indexed register. This pin is an open drain driver.
Programmable Clock Output. This pin can be programmed to generate an out-
put clock equal to F
MPEG decoders typically require a master clock of 256
synchronization.
External Control 1. The state of this pin (TTL HI or LO) is reflected in codec
indexed register. Open drain, 8 mA active 0.5 mA pull-up resistor.
Ring Indicator. Used to accept the ring indicator flag from the DAA.
Description
Analog Supply Voltage (+5 V).
Analog Ground.
Digital Supply Voltage (+5 V).
Digital Ground.
Description
EEPROM Clock. Open drain output, requires external pull-up.
EEPROM Data. Open drain I/O, requires external pull-up.
–14–
S
, 8
F
S
, 16
F
S
, 32
F
S
, 64
F
S
, 128
F
S
F
for audio
S
or 256
REV. A
F
S
.