TSI721 datasheet(20/67 Pages) RENESAS

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Tsi721 Datasheet

April 4, 2016

Integrated Device Technology

2.5

S-RIO Signals

2.6

General Signals

Table 3: S-RIO Signals

Name

Pin Type

Descriptiona

a. For information on S-RIO signals that are used for power-up purposes only, see Power-up Signals.

SRTP[3:0]

SRTN[3:0]

SRIO_O

Differential transmit data for the S-RIO port.

SRRP[3:0]

SRRN[3:0]

SRIO_I

Differential receive data for the S-RIO port.

SRRSTOn

It is an output for normal operation and an input during scan test mode.

As an asynchronous active-low reset output, this pin is low when four

consecutive S-RIO reset symbols are received, and SELF_RST is set to 1 in the

RapidIO PLM Port Implementation Specific Control Register

MECS

IO-PD

Asynchronous S-RIO Multicast Event Control Symbol (MECS). Its direction is

controlled by the MECS_O bit in the Device Control Register.

As an input, a rising or falling edge triggers an S-RIO MECS to be sent on the

S-RIO link. Use the RIO_PLM_SP0_MECS_FWD.SUBSCRIPTION/MULT_CS

and RIO_EM_MECS_TRIG_EN.CMD_EN to select the CMD field that should be

set with the MECS. Multiple MECSs with different CMD fields can be generated

by setting these fields appropriately.

As an output, this signal is toggled when an S-RIO MECS is received. Only a

single MECS CMD value should be selected to toggle the MECS input. Set the

RIO_EM_MECS_CAP_EN.CMD_EN to select the CMD value to be propagated

to the MECS pin. Note: Only 1 bit should be enabled in CMD_EN.

Table 4: General Signals

Name

Pin Type

Description

RSTn

I-PU

Fundamental reset (device reset).Assertion of this signal resets all logic inside

the Tsi721.

REFCLKP

REFCLKN

DIFF_I

S-RIO reference clock input. REFCLK requires a clock frequency as selected by

CLKSEL[1:0].

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