DFI CH960-CM246 - COM Express Connectors Signals and Descriptions

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Chapter 3
COM Express Connectors Signals and Descriptions
Signal Pin# Pin Type Pwr Rail /Tolerance CH960 PU/PD Module Base Specification R2.1 Description COM Express Carrier Design Guide R2.0 Description
AC/HDA_RST# A30 O CMOS 3.3V Suspend/3.3V series 33ɏ
resistor Reset output to CODEC, active low. CODEC Reset.
AC/HDA_SYNC A29 O CMOS 3.3V/3.3V series 33ɏ
resistor Sample-synchronization signal to the CODEC(s). Serial Sample Rate Synchronization.
AC/HDA_BITCLK A32 I/O CMOS 3.3V/3.3V series 33ɏ resistor Serial data clock generated by the external CODEC(s). 24 MHz Serial Bit Clock for HDA CODEC.
AC/HDA_SDOUT A33 O CMOS 3.3V/3.3V series 33ɏ
resistor Serial TDM data output to the CODEC. Audio Serial Data Output Stream.
AC/HDA_SDIN0 B30 I/O CMOS 3.3V Suspend/3.3V
AC/HDA_SDIN1 B29 I/O CMOS 3.3V Suspend/3.3V
AC/HDA_SDIN2 B28 I/O CMOS 3.3V Suspend/3.3V NC
Signal Pin# Pin Type Pwr Rail /Tolerance CH960 PU/PD Module Base Specification R2.1 Description COM Express Carrier Design Guide R2.0 Description
GBE0_MDI0+ A13 I/O Analog 3.3V max Suspend
GBE0_MDI0- A12 I/O Analog 3.3V max Suspend
GBE0_MDI1+ A10 I/O Analog 3.3V max Suspend
GBE0_MDI1- A9 I/O Analog 3.3V max Suspend
GBE0_MDI2+ A7 I/O Analog 3.3V max Suspend
GBE0_MDI2- A6 I/O Analog 3.3V max Suspend
GBE0_MDI3+ A3 I/O Analog 3.3V max Suspend
GBE0_MDI3-
A
2I
/
O Analo
g
3.3V max Sus
p
end
GBE0_ACT# B2 OD CMO
S
3.3V Sus
p
end
/
3.3V Gi
g
abit Ethernet Controller 0 activit
y
indicator
,
active low. Ethernet controller 0 activit
y
indicator
,
active low.
GBE0_LINK# A8 OD CMOS 3.3V Suspend/3.3V Gigabit Ethernet Controller 0 link indicator, active low. Ethernet controller 0 link indicator, active low.
GBE0_LINK100#
A
4OD CMO
S
3.3V Sus
p
end
/
3.3V Gi
g
abit Ethernet Controller 0 100 Mbit
/
sec link indicator
,
active low. Ethernet controller 0 100Mbit
/
sec link indicator
,
active low.
GBE0_LINK1000#
A
5OD CMO
S
3.3V Sus
p
end
/
3.3V Gi
g
abit Ethernet Controller 0 1000 Mbit
/
sec link indicator
,
active low. Ethernet controller 0 1000Mbit
/
sec link indicator
,
active low.
GBE0_CTREF A14 REF GND min 3.3V max NC
Reference voltage for Carrier Board Ethernet channel 0 magnetics center
tap. The reference voltage is determined by the requirements of the
Module PHY and may be as low as 0V and as high as 3.3V.
The reference voltage output shall be current limited on the Module. In
the case in which the reference is shorted to ground, the current shall be
limited to 250 mA or less.
Reference voltage for Carrier Board Ethernet channel 0
magnetics center tap.
Signal Pin# Pin Type Pwr Rail /Tolerance CH960 PU/PD Module Base Specification R2.1 Description COM Express Carrier Design Guide R2.0 Description
SATA0_TX+ A16 O SATA AC coupled on Module AC Coupling capacitor
SATA0_TX- A17 O SATA AC coupled on Module AC Coupling capacitor
SATA0_RX+ A19 I SATA AC coupled on Module AC Coupling capacitor
SATA0_RX- A20 I SATA AC coupled on Module AC Coupling capacitor
SATA1_TX+ B16 O SATA AC coupled on Module AC Coupling capacitor
SATA1_TX- B17 O SATA AC coupled on Module AC Coupling capacitor
SATA1_RX+ B19 I SATA AC coupled on Module AC Coupling capacitor
SATA1_RX- B20 I SATA AC coupled on Module AC Coupling capacitor
SATA2_TX+ A22 O SATA AC coupled on Module AC Coupling capacitor
SATA2_TX- A23 O SATA AC coupled on Module AC Coupling capacitor
SATA2_RX+ A25 I SATA AC coupled on Module AC Coupling capacitor
SATA2_RX- A26 I SATA AC coupled on Module AC Coupling capacitor
SATA3_TX+ B22 O SATA AC coupled on Module AC Coupling capacitor
SATA3_TX- B23 O SATA AC coupled on Module AC Coupling capacitor
SATA3_RX+ B25 I SATA AC coupled on Module AC Coupling capacitor
SATA3_RX- B26 I SATA AC coupled on Module AC Coupling capacitor
(S)ATA_ACT# A28 I/O CMOS 3.3V / 3.3V PU 10K: to 3.3V ATA (parallel and serial) or SAS activity indicator, active low.
Serial ATA activit
y
LED. O
p
en collector out
p
ut
p
in driven durin
g
SATA command activit
y
.
Pin Types
I Input to the Module
O Output from the Module
I/O Bi-directional input / output signal
OD Open drain output
RSVD pins are reserved for future use and should be no connect. Do not tie the RSVD pins together.
Serial ATA channel 2
Transmit output differential pair.
Serial ATA channel 0
Transmit output differential pair.
Serial ATA channel 0
Receive input differential pair.
Serial ATA channel 1
Transmit output differential pair.
Serial ATA channel 3
Receive input differential pair.
Serial ATA channel 2
Receive input differential pair.
Serial ATA channel 3
Transmit output differential pair.
A
C97/HDA Si
g
nals Descri
p
tion
s
Serial TDM data inputs from up to 3 CODECs.
Gi
g
abit Ethernet Si
g
nals Descri
p
tion
s
Serial ATA or SAS Channel 0 transmit differential pair.
Serial ATA or SAS Channel 0 receive differential pair.
Serial ATA or SAS Channel 3 transmit differential pair.
Serial ATA or SAS Channel 3 receive differential pair.
Serial ATA or SAS Channel 2 receive differential pair.
Serial ATA or SAS Channel 2 transmit differential pair.
Gigabit Ethernet Controller 0: Media Dependent Interface Differential
Pairs 0,1,2,3. The MDI can operate in 1000, 100 and 10 Mbit / sec
modes. Some pairs are unused in some modes, per the following:
1000BASE-T 100BASE-TX 10BASE-T
MDI[0]+/- B1_DA+/- TX+/- TX+/-
MDI[1]+/- B1_DB+/- RX+/- RX+/-
MDI[2]+/- B1_DC+/-
MDI[3]+/- B1_DD+/-
Serial ATA or SAS Channel 1 receive differential pair.
SATA Si
g
nals Descri
p
tion
s
Serial ATA or SAS Channel 1 transmit differential pair.
Audio Serial Data Input Stream from CODEC[0:2].
Media Dependent Interface (MDI) differential pair 0.
Media Dependent Interface (MDI) differential pair 1.
Media Dependent Interface (MDI) differential pair 2.
Only used for 1000Mbit/sec Gigabit Ethernet mode.
Media Dependent Interface (MDI) differential pair 3.
Only used for 1000Mbit/sec Gigabit Ethernet mode.
Serial ATA channel 1
Receive input differential pair.