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Following table shows the specification list of the 32/64/128Ch VoIP DSP card.

Functional Block

Functional contents

On-board
DC/DC Power Supply

Input: +15V
Output: +3.3V, +2.5V, +1.05V

DSP

• 32/64/128-Channel VoIP Control
• Supported Voice Codec Standards: G.711, G.729A
• Echo Cancellation
• RTP/RTCP
• Fax Tones Detection and Generation
• DTMF Detection and Generation

6

Connector

LAN_TX_XP_DSP
LAN_TX_XM_DSP 
LAN_RX_XP_DSP
LAN_RX_XM_DSP

TDM0_CK_DSP
TDM0_FS_DSP
TDM[1:0]_DX_DSP
TDM[1:0]_DR_DSP

15V
DG

PHY

100BASE- TX

DSP #0

+1.05VD_DSP0,
+2.5VD_DSP0,
+3.3VD

DDR SDRAM #0

64MByte

+2.5VD_DSP0

TXCLK

TXEN

TXD[3:0]

RXCLK

RXDV

RXD[3:0]

RXERR

CRS
COL

MDC

MDIO

REFCLK
TXCLK
TXEN
TXD[3:0]

RXCLK
RXDV
RXD[3:0]
RXERR
CRS
COL

MDC
MDIO

RXP
RXN

TXP
TXN

HW_CLK

HW_FH

DHW[1:0]
UHW[1:0]

DDR_CLK
DDR_CLK_N
DDR_CKE
DDR_CS0_N
DDR_RAS_N
DDR_CAS_N
DDR_WE_N
DDR_DM[1:0]
DDR_DQS[1:0]
DDR_A[15:0]
DDR_DATA[15:0]

CK

/CK

CKE

/CS

/RAS
/CAS

/WE

DM[1:0]

DQS[1:0]

BA[1:0], A[12:0]

D[15:0]

VREF

nRST_PORT_PHY
nINT_DSP0
nINT_DSP1
nRST_PORT_DSP

RXCLK
RXDV
RXD[3:0]
RXERR
CRS
COL
TXCLK
TXEN
TXD[3:0]

25MHz

DC/DC

+1.05VD_DSP0

TDM i/f (4pin)

LAN i/f (4pin)

DSP #1

REFCLK

TXCLK

TXEN

TXD[3:0]

RXCLK

RXDV

RXD[3:0]

RXERR

CRS
COL

HW_CLK

HW_FH

DHW[1:0]
UHW[1:0]

DDR_CLK
DDR_CLK_N
DDR_CKE
DDR_CS0_N
DDR_RAS_N
DDR_CAS_N
DDR_WE_N
DDR_DM[1:0]
DDR_DQS[1:0]
DDR_A[15:0]
DDR_DATA[15:0]

DDR SDRAM #1

64MByte

+2.5VD_DSP1

CK

/CK

CKE

/CS

/RAS
/CAS

/WE

DM[1:0]

DQS[1:0]

BA[1:0], A[12:0]

D[15:0]

VREF

MII i/f

Internal MII i/f

PHY_REFCLK

HBINT_N

RESET_N

HBINT_N

RESET_N

REFCLK

REFCLK

nINT

nRST

25MHz

25MHz

CARD_ID[6:0]
nPRESNT
DSP_CON_No

.

VREG

DC/DC

VREG

DC/DC

+3.3VD

+15V

BUF

Only NS5112

Local bus connection

CN101

BUF

IC103

IC101

IC102

IC202

X201

IC201

IC303

IC302

IC301

IC501

IC502

IC702

IC701

+3.3VD

+3.3VD

+3.3VD

+3.3VD

+3.3VD

+3.3VD

+3.3VD

+3.3VD

+2.5VD_DSP0

+1.05VD_DSP1,
+2.5VD_DSP1,
+3.3VD

+1.05VD_DSP1

+2.5VD_DSP1

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CN101 (Connector 80pin)

• Connection with the main board.

IC103 (Buffer)

• Card ID generation

IC101 (DSP #0)

• VoIP Function
• Supported Voice Codec Standards : G.711, G.729A.
• Echo Cancellation.
• RTP/RTCP.
• Fax Tones Detection and Generation.
• DTMF Detection and Generation. 
• The legacy voice data is connected with main board with the TDM bus, and the VoIP data is connected with main board with LAN

I/F.

IC102 (DDR SDRAM #0 64MByte)

• 64MByte main memory for DSP #0

IC202 (PHY 100BASE-TX)

• LAN-I/F for connection with main board.

X201(25MHz Clock)

• Clock for DSP and LAN.

IC201 (Buffer)

• Buffer for 25MHz Clock.

IC303 (DC/DC converter)

• +3.3VD is made from +15V.

IC302 (DC/DC converter)

• +1.05VD_DSP0 is made from +3.3VD.

IC301 (Series regulator)

• +2.5VD_DSP0 is made from +3.3VD.

It is only NS5112 as follows.
IC501 (DSP #1)

• VoIP Function
• Supported Voice Codec Standards : G.711, G.729A.
• Echo Cancellation.
• RTP/RTCP.
• Fax Tones Detection and Generation.
• DTMF Detection and Generation.
• DSP#1 is connected with main board by LAN through DSP#0.

IC502 (DDR SDRAM #1 64MByte) 

• 64MByte main memory for DSP #1

IC702 (DC/DC converter)

• +1.05VD_DSP1 is made from +3.3VD.

IC701 (Series regulator)

• +2.5VD_DSP1 is made from +3.3VD.

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