W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 43

• Manufacturer Part Number: W90220F
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Winbond.
43
Bit 0-14 Reserved
Bit 15-31 Length counter indicates the remainder to be transfer. DMA transfered number = Length Register -
5.2.3
There are four 32 bits registers included in the PCI Bridge Interface controller. The IO address map is allocated
from 0xf0000250 to 0xf000025c.
Table 5.2.3-1 : PCI Bridge Register Map
Master 0 Latency Register (REG0)
Port address : 0xf0000250
BA + 0x250
BA + 0x254
BA + 0x258
Port Addr.
BA + 0x25c
24
0
PCI BRIDGE INTERFACE REGISTERS
LENC. TC is asserted by Length counter reaching 0. Reading Length Counter may not get the valid
value if the channel is active, for the length may be in transition.
24
1
Symbol
REG0
REG1
REG2
REG3
26
2
Read/Write
Access
R/W
R/W
R/W
R/W
27
3
LENC9-16
Description
Master 0 Latency Register
Master 1 Latency Register
Master 2 Latency Register
Master 3 Latency Register
28
4
Power-on Default : 0x000003ff
29
5
(IO base (BA) : 0xf0000000)
30
6
31
7
W90220F
Version 0.84