IDT82P2821 datasheet(21/152 Pages) RENESAS

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IDT82P2821

21(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT

Pin Description

February 6, 2009

TDn / TDPn

(n=0~21)

Input

AG8, AC1, AF1, AG2, AG5, AJ7,

AJ19, AG20, AG23, AJ25, AJ28,

D27, D24, B22, B19, D18, B16,

A14, C13, A11, C10, C7

TDn: Transmit Data for Channel 0 ~ 21

When the transmit system interface is configured to Single Rail NRZ Format mode, this multi-

plex pin is used as TDn.

TDn accepts Single Rail NRZ data. The data is sampled into the device on the active edge of

TCLKn.

The active level on TDn is selected by the TD_INV bit (b3, TCF1,...).

TDPn: Positive Transmit Data for Channel 0 ~ 21

When the transmit system interface is configured to Dual Rail NRZ Format mode or Dual Rail

RZ Format mode, this multiplex pin is used as TDPn.

In Transmit Dual Rail NRZ Format mode, the pre-encoded NRZ data is input on TDPn and

TDNn and sampled on the active edge of TCLKn.

In Transmit Dual Rail RZ Format mode, the pre-encoded RZ data is input on TDPn and TDNn.

The line code is as follows (when the TD_INV bit (b3, TCF1,...) is ‘0’):

The active level on TDPn and TDNn is selected by the TD_INV bit (b3, TCF1,...).

TDNn / TMFn

(n=0~21)

Input / Output AK9, AC2, AF2, AK3, AK6, AH7,

AH19, AK21, AK24, AH25, AH28,

C27, C24, A22, A19, C18, A16,

D15, B13, D12, B10, B7

TDNn: Negative Transmit Data for Channel 0 ~ 21

When the transmit system interface is configured to Dual Rail NRZ Format mode, this multi-

plex pin is used as TDNn.

(Refer to the description of TDPn for details).

TMFn: Transmit Multiplex Function for Channel 0 ~ 21

When the transmit system interface is configured to Single Rail NRZ Format mode or Dual

Rail RZ Format mode, this multiplex pin is used as TMFn.

TMFn is configured by the TMF_DEF[2:0] bits (b7~5, TCF1,...) and can indicate PRBS/ARB,

SAIS, TOC, TLOS, SEXZ, SBPV, SEXZ+SBPV, SLOS. Refer to Section 3.5.7.2 TMFn Indica-

tion for details.

The output on TMFn is updated on the active edge of TCLKn (if available). The active level of

TMFn is always high.

TCLKn / TDNn

(n=0~21)

Input

AJ9, AC3, AF3, AJ3, AJ6, AG7,

AG19, AJ21, AJ24, AG25, AG28,

B27, B24, D23, D20, B18, D17,

C15, A13, C12, A10, A7

TCLKn: Transmit Clock for Channel 0 ~ 21

When the transmit system interface is configured to Single Rail NRZ Format mode or Dual

Rail NRZ Format mode, this multiplex pin is used as TCLKn.

TCLKn inputs a 1.544 MHz (in T1/J1 mode) or 2.048 MHz (in E1 mode) clock.

The data input on TDn (in Transmit Single Rail NRZ Format mode) or TDPn/TDNn (in Trans-

mit Dual Rail NRZ Format mode) is sampled on the active edge of TCLKn. The data output on

TMFn (in Transmit Single Rail NRZ Format mode) is updated on the active edge of TCLKn.

The active edge is selected by the TCK_ES bit (b4, TCF1,...).

TDNn: Negative Transmit Data for Channel 0 ~ 21

When the transmit system interface is configured to Dual Rail RZ Format mode, this multiplex

pin is used as TDNn.

(Refer to the description of TDPn for details).

Name

I / O

Pin No.

Description

TDPn

TDNn

Output Pulse on TTIPn Output Pulse on TRINGn *

Space

Negative Pulse

Positive Pulse

Negative Pulse

Space

Note:

* For Transmit Single Ended line interface, TRINGn should be open.

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