PC87393VJG National Semiconductor, PC87393VJG Datasheet - Page 48
PC87393VJG
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PC87393VJG
Manufacturer:
NS/国半
Quantity:
20 000
- Current page: 48 of 148
- Download datasheet (2Mb)
www.national.com
2.0 Device Architecture and Configuration
2.11.3 FDC Configuration Register
This register is reset by hardware to 24h.
Location:
Type:
Bit
Name
Reset
Bit
7
6
5
4
3
2
1
0
1: Four floppy drives are controlled with the aid of an external decoder.
TDR Register Mode
0: PC-AT compatible drive mode; i.e., bits 7-2 of the TDR are 111111b (default)
1: Enhanced drive mode
DENSEL Polarity Control
0: Active low for 500 Kbps, or 1 or 2 Mbps data rates
1: Active high for 500 Kbps, or 1 or 2 Mbps data rates (default)
FDC 2Mbps Enable. This bit is set only when a 2Mbps drive is used.
0: 2Mbps disabled and the FDC clock is 24 MHz (default)
1: 2Mbps enabled and the FDC clock is 48 MHz
Write Protect. This bit allows forcing of write protect functionality by software. When set, writes to the floppy
disk drive are disabled. This effect is identical to WP when it is active.
0: Write protected according to WP signal (default)
1: Write protected regardless of value of WP signal
PC-AT or PS/2 Drive Mode Select
0: PS/2 drive mode
1: PC-AT drive mode (default)
Reserved
TRI-STATE Control. When enabled and the device is inactive, the logical device output pins are in TRI-STATE.
0: Disabled (default)
1: Enabled
Four-Drive Encode Enable
0: Two floppy drives are directly controlled by DR1-0, MTR1-0.
Index F0h
R/W
Four-Drive
Encode
Enable
7
0
Register
Mode
TDR
6
0
DENSEL
Polarity
Control
5
1
FDC 2Mbps
Enable
Description
48
4
0
(Continued)
Protect
Write
3
0
Mode Select
PS/2 Drive
PC-AT or
2
1
Reserved
1
0
TRI-STATE
Control
0
0
Related parts for PC87393VJG
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
National Semiconductor [8-Bit D/A Converter]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
National Semiconductor [Media Coprocessor]
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Digitally Controlled Tone and Volume Circuit with Stereo Audio Power Amplifier, Microphone Preamp Stage and National 3D Sound
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
AC97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound
Manufacturer:
National Semiconductor
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
General Purpose, Low Voltage, Low Power, Rail-to-Rail Output Operational Amplifiers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
8-bit 20 MSPS flash A/D converter.
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Low Noise Quad Operational Amplifier
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad Differential Line Receivers
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Quad High Speed Trapezoidal? Bus Transceiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
Dual Line Receiver
Manufacturer:
National Semiconductor
Datasheet:
Part Number:
Description:
TTL to 10k ECL Level Translator with Latch
Manufacturer:
National Semiconductor
Datasheet: