LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 144

• Manufacturer Part Number: LPC47N227TQFP
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47N227TQFP

• Lead Free Status / RoHS Status: Not Compliant

CR04 can only be accessed in the configuration state and after the CSR has been initialized to 04H.
Note
Note
Note
BIT NO.
2
3
1
:
:
:
1,0
2,3
4
5
6
7
In this mode, EPP can be selected through the ecr register of ECP as mode 100.
In these modes, 2 drives can be supported directly, 3 or 4 drives must use external 4 drive
support. SPP can be selected through the ecr register of ECP as mode 000.
MIDI Support: The Musical Instrumental Digital Interface (MIDI) operates at 31.25Kbaud
(+/-1%).
Parallel Port
Extended Modes
Parallel Port FDC
MIDI 1
MIDI 2
EPP Type
Reserved
Type: R/W
BIT NAME
3
3
PP and UART Miscellaneous
Refer to Parallel Port Floppy Disk Controller description.
Serial Clock Select Port 1: A low level on this bit disables MIDI
support (default). A high level on this bit enables MIDI support.
Serial Clock Select Port 2: A low level on this bit disables MIDI
support (default). A high level on this bit enables MIDI support.
0 = EPP 1.9 (default)
1 = EPP 1.7
Reserved - Read as 0.
Bit 1
Bit 3
0
0
1
1
0
0
1
1
Table 60 – CR04
Bit 0
Bit 2
144
0
1
0
1
0
1
0
1
If CR1 bit 3 is a low level then:
Standard and Bi-directional Modes (SPP)
(default)
EPP Mode and SPP
ECP Mode
ECP Mode & EPP Mode
Normal
PPFD1
PPFD2
Reserved
DESCRIPTION
Default: 0x00 on VCC POR
2
1,2