Marvel Group Integrated Controller 88F6281 - Manual (Page 70)

88F6281
Hardware Specifications
Doc. No. MV-S104859-U0 Rev. E Copyright © 2008 Marvell
Page 70 Document Classification: Proprietary Information December 2, 2008, Preliminary
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
MPP[18] Reserved
NOTE: MUST be externally pulled down to 0x0 during reset.
Table 32: Reset Configuration (Continued)
P i n C o n f i g u r a t i o n F u n c t i o n
Start 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]
MSB LSB