DS26334 Просмотр технического описания (PDF) - Maxim Integrated

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DS26334

3.3V, 16-Channel, E1/T1/J1 Short- and Long-Haul Line Interface Unit

Maxim Integrated 

DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit

4 PIN DESCRIPTION

Table 4-1. Pin Descriptions

NAME

TTIP1

TTIP2

TTIP3

TTIP4

TTIP5

TTIP6

TTIP7

TTIP8

TTIP9

TTIP10

TTIP11

TTIP12

TTIP13

TTIP14

TTIP15

TTIP16

TRING1

TRING2

TRING3

TRING4

TRING5

TRING6

TRING7

TRING8

TRING9

TRING10

TRING11

TRING12

TRING13

TRING14

TRING15

TRING16

RTIP1

RTIP2

RTIP3

RTIP4

RTIP5

RTIP6

RTIP7

RTIP8

RTIP9

RTIP10

RTIP11

RTIP12

RTIP13

RTIP14

RTIP15

RTIP16

PIN TYPE

FUNCTION

ANALOG TRANSMIT AND RECEIVE

E1

F1

K1

L1

Transmit Bipolar Tip for Channels 1–16. These pins are differential

T5

line driver tip outputs. These pins can be high impedance if pin OE is

T6

low. When “1” is set in the Output Enable Register OE bit, the

T10

associated TTIPn pin will be enabled when the OE pin is high. The

T11 Analog differential outputs of TTIPn and TRINGn can provide internal

M16 output matched impedance for E1 75Ω, E1 120Ω, T1 100Ω, or J1 110Ω.

L16

G16

If the TCLK input for a given LIU is held low for 64 MCLKs, that LIU’s

F16

transmitter is powered down and the TTIP/TRING outputs are high

A12

impedance.

A11

A7

A6

E2

F2

K2

L2

Transmit Bipolar Ring for Channels 1–16. These pins are

R5

differential line driver ring outputs. These pins can be high impedance

R6

if pin OE is low. When “1” is set in the Output Enable Register OE bit,

R10

the associated TRINGn pin will be enabled when the OE pin is high.

R11 Analog The differential outputs of TTIPn and TRINGn can provide internal

M15 output matched impedance for E1 75Ω, E1 120Ω, T1 100Ω, or J1 110Ω.

L15

G15

If the TCLK input for a given LIU is held low for 64 MCLKs, that LIU’s

F15

B12

transmitter is powered down and the TTIP/TRING outputs are high

impedance.

B11

B7

B6

A1

C1

H1

N1

T1

T3

T8

Receive Bipolar Tip for Channels 1–16. Receive analog input for

T13

T16

Analog

input

differential receiver. Data and clock are recovered and output at

RPOS/RNEG and RCLK pins, respectively. The differential inputs of

RTIPn and RRINGn can provide internal impedance matching with

P16

external resistance for E1 75Ω, E1 120Ω, T1 100Ω, or J1 110Ω.

J16

D16

A16

A14

A9

A4

10 of 121

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