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

NAME

PIN TYPE

FUNCTION

TCLK1

F5

TCLK2

G4

TCLK3

G9

TCLK4

H6

TCLK5

M7

TCLK6

L8

Transmit Clock for Channels 1–16. The transmit clock has to be

1.544MHz for T1 or 2.048MHz for E1 mode. TCLKn is the clock used

to sample the data TPOS/TNEG or TDAT on the falling edge. The

expected TCLK can be inverted.

TCLK7

L10

If TCLKn is ‘high’ for 16 or more MCLKs, then transmit all ones

TCLK8

TCLK9

P9

K11

I

(TAOs) is sent to the line side of the corresponding transmit channel.

When TCLKn starts clocking again, normal operation will begin again

TCLK10

K12

for the corresponding transmit channel.

TCLK11

F14

TCLK12

E12

TCLK13

C11

TCLK14

D12

TCLK15

N7

If TCLKn is ‘low’ for 64 or more MCLKs, then the corresponding

transmit channel on the line side will power-down and be put into high

impedance. When TCLKn starts clocking again the corresponding

transmit channel will power-up and come out of high impedance.

TCLK16

D11

RPOS1/RDATA1

F4

RPOS2/RDATA2

RPOS3/RDATA3

RPOS4/RDATA4

RPOS5/RDATA5

RPOS6/RDATA6

RPOS7/RDATA7

RPOS8/RDATA8

RPOS9/RDATA9

F3

L3

Receive Positive Data Output for Channels 1–16. In dual-rail mode

L4

the NRZ data output indicates a positive pulse on RTIP/RRING. Upon

K8

detecting an LOS, AIS can be inserted if the AISEL bit in the GC

M9

P8

(0Fh) register is set; otherwise, the pins will be active. AIS insertion

can also be controlled on an individual LIU basis by the IAISEL (05h)

register. If a given receiver is in power-down mode, the associated

M12

O,

RPOS pin is high impedance.

M14 tri-state

RPOS10/RDATA10 K13

RPOS11/RDATA11 G12

RPOS12/RDATA12 E14

Receive Data Output for Channels 1–16. In single-rail mode, NRZ

data is sent out on this pin. If a given receiver is in power-down mode,

the associated RPOS pin is high impedance.

RPOS13/RDATA13 C12

RPOS14/RDATA14 C10

RPOS15/RDATA15 C8

Note: During an LOS condition, the RPOS/RDATA outputs remain

active.

RPOS16/RDATA16 E5

RNEG1/CV1

E3

RNEG2/CV2

G5

RNEG3/CV3

K4

Receive Negative Data Output for Channels 1–16. In dual-rail

RNEG4/CV4

M3

mode the NRZ data output indicates a negative pulse on

RNEG5/CV5

L7

RTIP/RRING. Upon detecting a LOS, AIS can be inserted if AISEL bit

RNEG6/CV6

RNEG7/CV7

RNEG8/CV8

RNEG9/CV9

M10

in the GC register is set; otherwise, the pins will be active. AIS

P11

insertion can also be controlled on an individual LIU basis by IAISEL

K10

O,

register. If a given receiver is in power-down mode, the associated

M13 tri-state RNEG pin is high impedance.

RNEG10/CV10

L14

RNEG11/CV11

F13

Code Violation for Channels 1–16. In single-rail mode, bipolar

violation, code violation, and excessive zeros are reported on CVn. If

RNEG12/CV12

F11

HDB3 or B8ZS is not selected, this pin indicates only BPVs. If a given

RNEG13/CV13

E10

receiver is in power-down mode, the associated CV pin is high

RNEG14/CV14

C9

impedance.

RNEG15/CV15

C7

RNEG16/CV16

J3

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