DS26521 datasheet(245/258 Pages) MAXIM

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DS26521 Single T1/E1/J1 Transceiver

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Table 12-4. Transmit AC Characteristics

(VDD = 3.3V ±5%, TA = -40°C to +85°C.) (Note 1) (See Figure 12-9, Figure 12-10, and Figure 12-11.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

(Note 2)

648

TCLK Period

tCP

(Note 3)

488

tCH

125

TCLK Pulse Width

tCL

125

(Note 4)

648

TSYSCLK Period

tSP

(Note 5)

448

tSH

TSYSCLK Pulse Width

tSL

TSYNC or TSSYNCIO Setup to TCLK

or TSYSCLK falling

tSU

tCH - 5

tSH - 5

TSYNC or TSSYNCIO Pulse Width

tPW

(Note 6)

488

244

122

TSSYNCIO Pulse Width (Notes 7, 8)

tPW

TSER, TSIG Setup to TCLK,

TSYSCLK Falling

tSU

TSER, TSIG Hold from TCLK,

TSYSCLK Falling

tHD

Delay TCLK to TCHBLK, TCHCLK,

TSYNC

tD2

Delay TSYSCLK to TCHCLK, TCHBLK

tD3

Delay TCLK to TTIP/TRING

tD4

Delay BPCLK to TSSYNCIO (Note 7)

tD5

Note 1:

The timing parameters in this table are guaranteed by design (GBD).

Note 2:

T1 Mode.

Note 3:

E1 Mode.

Note 4:

RSYSCLK = 1.544MHz.

Note 5:

RSYSCLK = 2.048MHz.

Note 6:

TSSYNCIO configured as an input (GTCR2.1 = 0).

Note 7:

TSSYNCIO configured as an output (GTCR2.1 = 1).

Note 8:

Varies depending on the frequency of BPCLK.

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