88F6281

Hardware Specifications

Table 32: Reset Configuration (Continued)

Pin

Configuration Function

 

 

MPP[18]

Reserved

 

 

 

NOTE: MUST be externally pulled down to 0x0 during reset.

 

 

6.6 Serial ROM Initialization

The device supports initialization of ALL of its internal and configuration registers through the TWSI master interface. If serial ROM initialization is enabled, the device TWSI master starts reading initialization data from serial ROM and writes it to the appropriate registers, upon de-assertion of SYSRSTn.

When using Serial ROM Initialization, the MPP[9:8] pins must be configured to as TW_SCK (MPP[9]) and TW_SDA (MPP[8]).

6.6.1 Serial ROM Data Structure

Serial ROM data structure consists of a sequence of 32-bit address and 32-bit data pairs, as shown in Figure 3.

Figure 3: Serial ROM Data Structure

Start

MSBLSB address0[31:24]

address0[23:16]

address0[15:8]

address0[7:0]

data0[31:24]

data0[23:16]

data0[15:8]

data0[7:0]

address1[31:24]

address1[23:16]

address1[15:8]

address1[7:0]

data1[31:24]

data1[23:16]

data1[15:8]

data1[7:0]

Doc. No. MV-S104859-U0 Rev. E

 

Copyright © 2008 Marvell

Page 70

Document Classification: Proprietary Information

December 2, 2008, Preliminary

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Marvel Group 88F6281 Serial ROM Initialization, Serial ROM Data Structure, Pin Configuration Function MPP18 Reserved