CPC700 User’s Manual—Preliminary
5-35
The PCI MIN_GNT register is used to specify the minimum amount of time a PCI bus master needs to con-
trol the PCI bus during its mastership of the bus. This 8 bit register is read-only and returns 00h when read.
5.9.3.22 PCI MAX_LAT
Address offset: 3Fh
Width:
8
Reset Value:
00h
Access:
Read
The PCI MAX_LAT register specifies how often a PCI device needs to gain access to the PCI bus. This 8-
bit register is read-only and returns 00h when read.
5.9.3.23 PCI Bus Number
Address offset: 40h
Width:
8
Reset Value:
00h
Access:
Read
The PCI bus number register is used to identify the number of the PCI bus controlled by the CPC700. The
CPC700 is not a PCI to PCI bridge, therefore this register is read-only and returns 00h when read.
5.9.3.24 PCI Subordinate Bus Number
Address offset: 41h
Width:
8
Reset Value:
00h
Access:
Read
The PCI bus number register is used to identify the number of the last hierarchical bus behind the CPC700.
The CPC700 is not a PCI to PCI bridge, therefore this register is read-only and returns 00h when read.
5.9.3.25 PCI Disconnect Counter
Address offset: 42h
Width:
8
Reset Value:
00h
Access:
Read
The PCI disconnect counter register is an 8-bit register which determines the maximum number of PCI
clocks that a PCI master can burst access PLB memory before a target disconnect is initiated by the
bridge.The CPC700 does not implement a disconnect counter, therefore this register is read-only and
returns 00h when read.
Summary of Contents for CPC700
Page 10: ...Table of Contents x Table of Contents...
Page 16: ...Tables xvi List of Tables...
Page 28: ...1 12 CPC700 User s Manual Preliminary...
Page 72: ...3 36 Processor Interface...
Page 132: ...4 60 Memory Controller...
Page 184: ...5 52 PCI Interface...
Page 194: ...6 10 Clock Power Management and Reset...
Page 224: ...8 18 IIC...
Page 244: ...10 10 Interrupt Controller...
Page 246: ...I 11 2 JTAG...
Page 250: ...12 4 Processor Local Bus PLB...
Page 262: ...14 10 Register Summary...
Page 267: ...CPC700 User s Manual Preliminary...