HMP9701 Intersil Corporation, HMP9701 Datasheet - Page 11

• Manufacturer Part Number: HMP9701
• Description: AC97 Audio Codec
• Manufacturer: Intersil Corporation

Pinout
Pin Descriptions
DIGITAL I/O
SDATA_OUT
ANALOG I/O
SDATA_IN
LINE_IN_L
PC_BEEP
BIT_CLK
PHONE
RESET
NAME
SYNC
MIC1
MIC2
TQFP PIN
NUMBER
11
10
12
13
21
22
23
6
8
5
SDATA_OUT
OUTPUT
SDATA_IN
PC_BEEP
XTL_OUT
INPUT/
BIT_CLK
XTL_IN
RESET
O
O
I
I
I
I
I
I
I
SYNC
I
GND
GND
V
V
DD
DD
RESET - This active low signal causes a HMP9701 hardware reset that will return the control/status
registers to their default conditions.
SYNC - 48kHz sync pulse which defines the beginning of serial audio I/O frames. Note: must be
synchronous to BIT_CLK.
BIT Clock - 12.288MHz serial data clock derived by dividing down 24.576MHz crystal input.
This input is sampled on the falling edge of BIT_CLK.
Serial Data In - Input bit stream that contains recorded audio samples as well as codec status in-
formation. Data output on the rising edge of BIT_CLK.
PC Beep. Mono Input for PC Beep pass through to LINE_OUT. This input is attenuated from 0dB
to 45dB in 3dB steps and then summed with left and right line outputs (LINE_OUT_L,
LINE_OUT_R)
Phone. Mono Input from telephony subsystem speaker phone (or DLP - Down Line Phone)
Microphone Input 1. The MIC input may be either line-level or -20dB from line-level. In the latter
case, a software controlled 20dB gain block may be activated.
Microphone Input 2. The MIC input may be either line-level or -20dB from line-level. In the latter
case, a software controlled 20dB gain block may be activated.
Left Line Input. The left line-level may be selected for recording via one of the stereo ADC’s via the
Input Mux. In addition, this input can be gained/attenuated from +12dB to -34.5dB in 1.5dB steps
and then summed with left line output (LINE_OUT_L).
Serial Data Out - Output bit stream that contains audio playback samples as well as control data.
10
11
12
1
2
3
4
5
6
7
8
9
13 14 15 16
48
47
46
HMP9701 (TQFP)
45
HMP9701
44
TOP VIEW
17
43
18
11
42
19
41
20
40
21
39
22
DESCRIPTION
23
38
37
24
36
35
34
33
32
31
30
29
28
27
26
25
LINE_OUT_R
LINE_OUT_L
CAP2
CAP1
NC
AFILT3
AFILT2
AFILT1
V
V
AGND
V
AA
REFOUT
REF