PC87393VJG National Semiconductor, PC87393VJG Datasheet - Page 114

• Manufacturer Part Number: PC87393VJG
• Description: IC, SUPER I/O DEVICE, TQFP-100
• Manufacturer: National Semiconductor

Specifications of PC87393VJG

• Data Rate: 2Mbps
• Supply Voltage Range: 3V to 3.6V
• Logic Case Style: TQFP
• No. Of Pins: 100
• Operating Temperature Range: 0°C to +70°C
• Termination Type: SMD
• Transceiver Type: Interface
• Rohs Compliant: No

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7.0 X-Bus Extension
7.4.3
This register affects the mapping of modules associated with Chip Select 0, XCS0.
Location:
Type:
Bit
Name
Reset
4-0
Bit
7
6
5
X-Bus Select 0 Configuration Register (XZCNF0)
XRDY Enable. Enables the use of XRDY input for devices mapped to XCS0. Reset value of this bit is defined
by the XCNF2-0 strap inputs.
0: Disabled (default for all XCNF2-0 values, except 010 or 110)
1: Enabled (default if XCNF2-0 is set to 010 or 110)
Wait States Enable
0: Wait states disabled
1: 8 clock cycles of wait enabled (default)
Indirect Memory Cycle Enable. Enable indirect memory access mechanism to generate memory transaction
on XCS0.
0: Disabled (default)
1: Enabled
Select 0 Mapping
UDIZ = User-Defined I/O Zone
Bits
4 3 2 1 0 KBC PM
0 0 0 0 0
0 0 0 0 1
0 0 0 1 0
0 0 0 1 1
0 0 1 0 0
0 0 1 0 1
0 0 1 1 0
0 0 1 1 1
0 1 0 0 0
0 1 0 0 1
0 1 0 1 0
0 1 0 1 1
0 1 1 0 0
0 1 1 0 1
0 1 1 1 0
0 1 1 1 1
1 0 0 0 0
1 0 0 0 1
1 0 0 1 0
1 0 0 1 1
1 0 1 0 0
1 0 1 0 1
1 0 1 1 0
1 0 1 1 1
-
+
Others
Offset 01h
R/W
= XCS0 does not respond to this zone decode
= XCS0 responds to this zone decode and is influenced by its setting
Enable
XRDY
Strap
7
-
-
+
+
+
+
-
+
+
+
+
+
+
+
+
+
+
-
+
+
+
-
+
-
Reserved
Wait States
-
-
-
+
+
+
-
+
+
-
-
+
+
+
-
+
+
-
-
+
+
+
-
+
(Continued)
Enable
6
1
RTC TST
-
-
-
-
+
+
-
+
+
-
-
-
+
+
-
+
+
-
-
-
+
+
-
+
Function
-
-
-
-
-
+
-
-
+
-
-
-
-
+
-
+
+
-
-
-
-
+
-
+
Memory
Indirect
Enable
Cycle
5
0
UDIZ BIOS MEM
-
-
-
-
-
-
+
+
+
-
+
-
-
-
+
+
+
-
-
-
-
-
+
+
-
+
+
+
+
+
+
+
+
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
114
Description
4
- (default if XCNF2-0 No BIOS mode is set)
- (default if XCNF2-0 selects any of the BIOS modes)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
3
Select 0 Mapping
Strap
2
1
0