CMI8738-MX Datasheet, PDF (8/32 Pages) C-Media Electronics – PCI-6CH C3DX series /PCI-Based HRTF 3D Extension Positional Audio Chip

CMI8738
PCI-6CH C3DX series /PCI-Based HRTF 3D Extension Positional Audio Chip
Name
Number
PIN Type
XTXD
XRXD
XSPDIFO
XSPDIFI
XSPDIF2
XBIO3-XBIO0
VDD5V
VDDM
DGND
XEECS
XGPBIO
XMDSEL
XRING
XOFFHOOK
XAFERST
XHSPFS
XHSPSDI
XHSPSDO
XAFEMCLK
XSCLK
NC
NC
XMBCSZ
ZVCLK
ZVLRCK
ZVSDI
88
89
98
86
113
109-112
83
100
99
84
87
114
101
102
103
105
106
107
108
104
58
57
85
112
113
86
O
I
O
I
I
I/O
+5V
+3.3V/+5V
GND
O
O
I
I
O
O
O
I
O
O
O
I
I
I
I
Remark: All PCI interface I/O pins are 3.3V signal and 5V tolerance.
Definition
MIDI transmit data
MIDI receive data
44.1k/48kHZ SPDIF output
44.1k/48kHZ SPDIF input
Secondary SPDIF input (5v only)
General purpose I/O
PCI I/O power pin
PCI I/O power pin
PCI I/O ground
EEPROM chip select
General purpose I/O pin (default=high)
Modem device enable(high:enable)
Ring detection input
Off-hook control output
Reset signal for MODEM DAA
DAA frame SYNC
DAA data input
DAA data output
DAA master clock
DAA serial clock
Audio chip select (low:enable)
ZV port clock
ZV port LR channel clock
ZV port data input
5.3 Analog Pin Description
Name
AVDD
AGND
XADOUTL-R
XADCHL-R
XADOUTC
XADOUTB
XINTVERF
NC
XCDL-R
XCDGND
XLNL-R
XAUXL-R
XPCSPKIN
XMICIN
XREARL-R
EXTBASS
Number
61,81
60,82
64,65
66,67
68
69
62
63
71,72,70
75,76
77,78
79
80
73,74
59
5.4 Power On Configuration Pin
Name
XEECS
Number
84
PIN Type
+5V
GND
AI/O
AI/O
AI/O
AI/O
AO
-
AI
AI
AI
AI
AI
AO
AI
Definition
Analog power
Analog ground
Line out (front channels L/R)
ADC sample hold pin
Center channel output
Bass channel output
Internal reference voltage (for testing only)
Not connect
CD audio differential input
Line in or Rear channels out
Aux. Line in
PC beep signal or Mono in
Microphone in
Rear channels L/R out
External bass channel input
Definition
4/6 channel selection. For 4 or 6 channel purpose selection. This pin
tie high mean 6ch, pull down compatible with 4ch chip.
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