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    M40e X.21 and V.35 Cable Pinouts for EIA-530 PIC

    The EIA-530 PIC accepts X.21 and V.35 cable connectors.

    • A V.35 connection requires an DB-25 to V.35 cable and connects to a V.35 data terminal equipment (DTE) 34-pin Winchester type male cable (one per port). Table 1 describes the V.35 cable pinouts.
    • An X.21 connection requires an DB-25 to X.21 cable and connects to a X.21 DTE DB-15 male cable. Table 2 describes the X.21 cable pinouts.

    Figure 1: EIA-530 PIC

    Image g003044.gif

    Table 1: DB-25 Connector to V.35 Connector Pinout for the M40e Router

    DB-25 Pin

    Signal

    V.35 Pin

    Description

    2

    TD

    P

    Transmit Data

    14

    TD

    S

    Transmit Data

    3

    RD

    R

    Receive Data

    16

    RD

    T

    Receive Data

    4

    RTS

    C

    Ready To Send

    5

    CTS

    D

    Clear To Send

    6

    DSR

    E

    Data Set Ready

    20

    DTR

    H

    Data Terminal Ready

    24

    XTC

    U

    DTE Transmit Clock

    11

    XTC

    W

    DTE Transmit Clock

    15

    TC

    Y

    Transmit Clock

    12

    TC

    AA

    Transmit Clock

    17

    RC

    V

    Receive Clock

    9

    RC

    X

    Receive Clock

    1

    FGND

    A

    Protective Ground

    7

    GND

    B

    Signal Ground

    8

    DCD

    F

    Data Carrier Detect

    Table 2: DB-25 Connector to DB-15 (X.21) Connector Pinout for the M40e Router

    DB-25 Pin

    Signal

    DB-15 (X.21) Pin

    Description

    1

    FGND

    1

    Protective Ground

    7

    GND

    8

    Signal Ground

    2

    T

    2

    Transmit Data

    14

    T

    9

    Transmit Data

    3

    R

    4

    Receive Data

    16

    R

    11

    Receive Data

    4

    C

    3

    Request To Send

    19

    C

    10

    Request To Send

    8

    I

    5

    Data Carrier Detect

    10

    I

    12

    Data Carrier Detect

    17

    S

    6

    Receive Clock

    9

    S

    13

    Receive Clock


    Published: 2010-10-28