TSI721 datasheet(24/67 Pages) RENESAS

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Tsi721 Datasheet

April 4, 2016

Integrated Device Technology

I2C_SEL

I2C pin select. Combined with the I2C_SA[1,0] pins, Tsi721 will determine the

lower 2 bits of the 7-bit address of the EEPROM address it boots from.

When asserted, the I2C_SA[1:0] pins represent the two LSBs of the 7-bit

EEPROM slave address when Tsi721 acts as a I2C master downloading from an

EEPROM. The EEPROM slave address is as follows:

A6 = 1

A5 = 0

A4 = 1

A3 = 0

A2 = 0

A1 = I2C_SA[1]

A0 = I2C_SA[0]

When de-asserted, the I2C_SA[1:0] pins are ignored and the lower two bits of

the EEPROM address default to 00. The values of the EEPROM address can be

overridden by software after initialization.

This power-up signal is multiplexed with GPIO[5]. It is a static signal.

SP_DEVID

S-RIO base deviceID control

When the SP_HOST pin is high, it configures the reset value of the RapidIO

Base deviceID CSR: the LSB of the CSR’s BASE_ID and LAR_BASE_ID fields

are set to SP_DEVID, while other bits of these fields are set to 0.

When the SP_HOST pin is low and SP_DEVID is high, it configures the reset

value of the RapidIO Base deviceID CSR: the CSR’s BASE_ID and

LAR_BASE_ID fields are set to all ones.

When the SP_HOST pin is low and SP_DEVID is low, it configures the reset

value of the RapidIO Base deviceID CSR: the CSR’s BASE_ID field is set to

0xFE and the CSR’s LAR_BASE_ID field are set to 0x00FE.

This signal is multiplexed with GPIO[10]. It is a static signal.

SP_HOST

S-RIO host / slave control. This signal sets the reset value of the HOST bit of the

RapidIO Port General Control CSR.

0 = Tsi721 is an S-RIO slave.

1 = Tsi721 is an S-RIO host.

This signal is multiplexed with GPIO[9]. It is a static signal.

SP_SWAP_RX

S-RIO receive lane swap. This signal sets the reset value of the SWAP_RX[1:0]

bits of RapidIO PLM Port Implementation Specific Control Register.

0 = Disable S-RIO port receive lane swap; that is, set the SWAP_RX[1:0]

1 = Enable S-RIO port receive 4x lane swap; that is, set the SWAP_RX[1:0]

This signal is multiplexed with GPIO[7].

Table 9: Power-Up Signals (Continued)

Name

Pin Type

Description

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