88F619x
Hardware Specifications
Table 38: Reset Configuration (Continued)
Pin
Configuration Function
MPP[18]
Reserved
Must be 0x1 during reset. Either leave the signal floating (internally pulled up to 0x1) or pull the signal
to 0x1 during reset.
8.6
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]).
8.6.1
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 6.
Figure 6: Serial ROM Data Structure
MSB
LSB
address0[31:24]
Start
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-S104987-U0 Rev. F
Page 80
Copyright © 2008 Marvell
Document Classification: Proprietary Information
December 2, 2008, Preliminary
MARVELL [ MARVELL TECHNOLOGY GROUP LTD. ]
