Registers
MPC5200B Users Guide, Rev. 1
Freescale Semiconductor 10-35
10.3.3.2.1 Rx Packet Size PCIRPSR(RW) —MBAR + 0x3880
10.3.3.2.2 Rx Start Address PCIRSAR (RW) —MBAR + 0x3884
10.3.3.2.3 Rx Transaction Control Register PCIRTCR(RW) —MBAR + 0x3888
msb 012345678 9 1011121314 15
R Packet_Size[31:16]
W
RESET 0 00000000 0 0 0 00 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 lsb
R Packet_Size[15:2] Packet_Siz[1:0]
W
RESET 0 00000000 0 0 0 00 0 0
Bits Name Description
0:31 Packet_Size The user writes this register with the number of bytes for Receive Controller to fetch over
PCI. The two low bits are hardwired low; only 32-bit data transfers to the FIFO are allowed.
Writing to this register also completes a Restart Sequence as long as Master Enable bit,
PCIRER[ME], is high and Reset Controller bit, PCIRER[RC], is low.
msb 012345678 9 1011121314 15
R Start_Add
W
RESET 0 00000000 0 0 0 00 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 lsb
R Start_Add
W
RESET 0 00000000 0 0 0 00 0 0
Bits Name Description
0:31 Start_Add The user writes this register with the desired Starting Address for the current packet. This
is the address which will be first presented on the external PCI bus and then
auto-incremented as necessary. This register will not increment as the PCI packet
proceeds.
msb 012345678 9 1011121314 15
R
Reserved PCI_cmnd Max_Retries
W
RESET 0 0 0 0 1100 0 0 0 0 0 0 0 0
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