88F6180
Hardware Specifications
Table 28: Reset Configuration (Continued)
P in
MPP[3]
C on fi g ur a tio n F u n ct io n
Used for internal testing
Must be 0x0 during reset. Either leave the signal floating or pull the signal to 0x0 during reset.
NOTE:
Internally pulled to 0x0.
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: Serial ROM Data Structure
MSB
LSB
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]
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Doc. No. MV-S104988-U0 Rev. E
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Copyright © 2008 Marvell
December 2, 2008, Preliminary
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