User Guide

PAMS
Technical Documentation
NHD–4
Schematics/Layouts & Pinouts
Page 5–13
Original 11/97
AUDIO CODEC (N600)
CODEC
1
2
3
4
5
6
7
8
9
10
11
12
13
1415
16
17
18
19
20
21
22
23
24
VA2
VA2
NCMIC1P
MCLK
VLRP
VFEANRMIC1N
VLRN
MIC2P
MIC2N
VFEARP
GND
DR
CCCLK
CSDX
GND
FS
LO
GND
MIC3N
MIC3P
25
26
27
28
1 Not connected
3 VA2 Power input for power section
4 Not connected
6 XEAR_HFJPWR External earpiece output VF+
9 Power Ground
10 PCMIN Receive data input
11 CODEC_CLK Control Clock Input
12 XCODEC_CS Chip Select Input
13 CODEC_DI Control data Input
14 BUZZER Pulse widht modulated buzzer driver output
7 EarN Differential / earpiece amp outputs
5 Not connected
15 VL1 Power supply input for the digital section
16 CODEC_DO Control Data output
17 PCM Transmit data output
18 Digital Ground
19 CODEC_FS Frame Synch Input
20 CODEC_MCLK Master Clock Input
21 MICENX A logic written into DO (CR1) appears at LO pin as logic 0 (and vice versa)
NC
CI
BZ
VL1
CDO
22 2nd neg high impedance input to transmit pre–amplifier microphone connection (Connected via cap to Ground)
23 XMIC_JCONN 2nd pos high impedance input to transmit pre–amplifier microphone connection
24 MicN Neg high impedance input to transmit pre–amplifier microphone connection
25 MicP Pos high impedance input to transmit pre–amplifier microphone connection
26 Analog Ground
27 3th neg high impedance input to transmit pre–amplifier microphone connection (Connected via cap to Ground)
28 3th pos high impedance input to transmit pre–amplifier microphone connectionr (Connected via cap to Ground)
2 VA2 Power supply for the analog section
8 EarP Differential / earpiece amp outputs