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6

EC bus

H100 bus

28

11

+3.3v

+3.3V

Status

Indication x 2

Local

Reset

nRESET

eSAMSON 2

(ASIC)

LA[12:0]

LD[7:0]

nRD,nWR

nCSI

LnRST

P0[7:0]

Jumper

+3.3V

DC/DC Converter

+

15V

BRI_RST_7-0

nBREQ

nBACK

P1[7:0]

P5[7:0]

nW

AIT

OSC

16.384MHz

A12-0

D7-0

nRD,nWR

nIRQ[1]

nCS[0]

DHW0(2.048Mbps)

UHW0(2.048Mbps)

Line Interface Block #1

TX+

TX-

RX+

RX-

CLK(4.096MHz)

CP

 [0]

CLKOUT_0(1536kHz)

RJ45

+3.3V

BRI_RST_1

T

ransformer

T

ransformer

Serge

Absor

ber

BRI-IC

(PSB21

150)

USA:On

Euro:Of

f

USA:Of

f

Euro:On

MODE_[0]

MODE0

40V

GND2

DC_CONT

 [0]

7.68MHz

nCS_BRI[0]

A7-0

D7-0

NWR,nRD

Selector

(2

1)

CLKOUT_0

CLKOUT_1

1536kHz

CLK Select

P2[6:4]

MODE_7-0

P3[7:0]

DC_cont_7-0

P4[7:0]

LA10-8

nCS[0]

nCS_BRI[1:0]

ALM(Red)

40V

GND

GND2

Jumper

SFG

SFG

EC_CLK

EC_AD[15:0]

EC_BE[1:0]

EC_FRAME

EC_TRDY

EC_ST

OP

EC_INT

EC_P

AR

EC_PERR

EC_nRST

EC_IDSEL

EC_DET

CT_NETREF

nCT_FRAME_A

CT_CLK_A

CT_D[7:0]

nRESET

PLLCLK

LDHW[1:0]

LUHW[1:0]

PC[7:0]

HW_CLK0

L_NETREF

nIRQ[0]

+3.3V

P2[7]

CT_LOS

Decoder

TCK

TDI

TDO

TMS

TRST

JT

AG

nINT_BRI

nINT_BRI

P2[2]

LED

(Red)

P2[3]

(Gr)

KX-NCP1280XJ BLOCK DIAGRAM

40V

GND

Serge

Absor

ber

C768A

XT

AL1

XT

AL2

C768

MODE1

SX

SR

nINT_BRI

Buf

fer

Line Interface Block #2

TX+

TX-

RX+

RX-

CLK(4.096MHz)

CP

 [0]

CLKOUT_1

RJ45

+3.3V

BRI_RST_2

T

ransformer

T

ransformer

Serge

Absor

ber

BRI-IC

(PSB21

150)

USA:On

Euro:Of

f

USA:Of

f

Euro:On

MODE_[1]

MODE0

40V

GND2

DC_CONT

 [1]

7.68MHz

nCS_BRI[1]

A7-0

D7-0

NWR,nRD

SFG

+3.3V

40V

GND

Serge

Absor

ber

C768B

XT

AL1

C768

MODE1

SX

SR

nINT_BRI

C768A

nINT

DHW0(2.048Mbps)

UHW0(2.048Mbps)

7

The reference point of the line interface on the BRI2 cards is Point S/T (Dose not support U point). and supports External call
mode and internal call mode as operating mode.
During External call mode, the power is supplied from PBX, not from DSU. During internal call mode, PSB21150 (Infineon) is
installed as ISDN basic interface IC for BRI2. Refer to "Line Interface Block" for connection diagram of basic interface.
For mode detailed specifications, refer to PSB21150 data sheet.

Line Interface Summary.

PSB21150 Block figure summary

PSB21150 Characteristics

Item

Contents

Remarks

Interface reference point

S/T point

 

Transmission mode

4 line (TX+/TX-/RX+/TX-)

 

Transmission capacity

144kbps, 2B+D(B=64kbps, D=16kbps)

BRI2:line capacity

Transmission Line code

AMI Code

 

Power Supply

External call mode: None Internal call mode:+40V power
supply

 Internal call power supply BRI2: 4.5W max/1line,
9W max/entire card

Internal call power supply
method

Phantom power supply Separate line power supply

 

Interface connector

RJ45

Item

Contents

Remarks

Transceiver mode

LT-T (External)/LT-S(Internal)

 

Line Extraction Clock

1.536MHz

 

Dch FIFO

32Byte

×2

TX/RX

Bch FIFO

64Byte

×2 (×2)

TX/RX

PCM highway interface

2.048m (Bch interface only) 

JOM-2interface

2.048m (Bch/Dch dual interface) 

Not in use for BRI2

uP-interface

8bit parallel (Intel/Motorola)

Intel mode is used for BRI2

8

This card utilizes an 2.048 Mbps local highway and local TSW for the purpose of switching the communications channel (B ch.)
detected from the ISDN main interface by the PSB21150, with the CT bus interface. (eSAMSON internal module)
Figure illustrates the B ch. Highway assign and eSAMSON/PSB21150 input/output timing. Refer to the eSAMSON specifica-
tions and PSB21150 databook.

Bch highway assign & eSAMSON/PSB21150 input/output timing

9

This card sends/receives data by dual-port RAM communication as illustrated.

DPRAM communication schematic