DS34S101 datasheet(21/198 Pages) MAXIM

21 / 198 page

____________________________________________________ DS34S101, DS34S102, DS34S104, DS34S108

Rev: 032609

21 of 198

PIN NAME(1)

TYPE(2) PIN DESCRIPTION

Port[n]_cfg_reg.Int_type=specifies serial (00), E1 (01) or T1 (10).

Port[n]_cfg_reg.Int_type=specifies serial (00), E1 (01) or T1 (10) interface type.

This pin is only active in external mode (GCR1.MODE=1).

See the timing diagrams in Figure 14-8 through Figure 14-13.

TDMn_TSIG_CTS

8mA

TDMoP Transmit Signaling Output

When the interface type is configured for E1 or T1, the transmit signaling function

of this pin is active. Functional timing is shown in Figure 10-33 and Figure 10-34.

TDMoP Clear to Send Output

When the interface type is configured for serial, the clear-to-send function of this

pin is active. In this mode, the state of this pin is controlled by the value stored in

Port[n]_cfg_reg.CTS.

Port[n]_cfg_reg.Int_type specifies serial (00), E1 (01) or T1 (10) interface type.

This pin is only active in external mode (GCR1.MODE=1).

See the timing diagrams in Figure 14-8 through Figure 14-13.

TDMn_RCLK

Ipu

TDMoP Receive Clock Input

In two-clock mode, this signal clocks the receive TDM interface of the TDMoP

engine: TDMn_RX, TDMn_RX_SYNC and TDMn_RSIG_RTS.

In one-clock mode, this signal is ignored, and the TDMn_TCLK signal clocks both

the transmit and receive interfaces of the TDMoP engine.

Port[n]_cfg_reg.Two_clocks specifies two-clock mode (1) or one-clock mode (0).

Port[n]_cfg_reg.Rx_sample specifies latching on the rising (1) or falling (0) edge.

TDM1_RCLK (port 1) is used in high speed E3/T3/STS1 mode.

This pin is only active in external mode (GCR1.MODE=1).

See the timing diagrams in Figure 14-8 through Figure 14-13.

TDMn_RX

Ipu

TDMoP Receive Data Input

Serial data to the TDMoP engine is input on this pin.

In two-clock mode, this signal is clocked by TDMn_RCLK.

In one-clock mode, this signal, is clocked by TDMn_TCLK.

Port[n]_cfg_reg.Two_clocks specifies two-clock mode (1) or one-clock mode (0).

TDM1_RX (port 1) is used in high speed E3/T3/STS1 mode.

This pin is only active in external mode (GCR1.MODE=1).

See the timing diagrams in Figure 14-8 through Figure 14-13.

TDMn_RX_SYNC

Ipd

TDMoP Receive Frame/Multiframe Sync Input

In two-clock mode, this signal is clocked by TDMn_RCLK and specifies frame or

multiframe alignment for the receive interface of the TDMoP engine. The signal on

this pin must pulse high for one TDMn_RCLK cycle when the first bit of a frame is

present on the TDMn_RX pin. This pulse must be repeated every N*125µs where

N is a positive integer (example: if N=16, it pulses every 2ms).

In one-clock mode, this signal is ignored and TDMn_TX_SYNC specifies frame

alignment for both the transmit and receive interfaces of the TDMoP engine.

Port[n]_cfg_reg.Two_clocks specifies two-clock mode (1) or one-clock mode (0).

This pin is only active in external mode (GCR1.MODE=1).

See the timing diagrams in Figure 14-8 through Figure 14-13.

TDMn_RSIG_RTS

Ipu

TDMoP Receive Signaling Input

When the interface type is configured for E1 or T1, the transmit signaling function

of this pin is active.

In two-clock mode, this signal is clocked by TDMn_RCLK.

In one-clock mode, this signal, is clocked by TDMn_TCLK.

DS34S101 Datasheet(PDF) 21 Page - Maxim Integrated Products

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