LPC47B272-MS SMSC, LPC47B272-MS Datasheet - Page 163

• Manufacturer Part Number: LPC47B272-MS
• Description: IC CTRLR SUPER I/O LPC 100-QFP
• Manufacturer: SMSC

Specifications of LPC47B272-MS

• Controller Type: I/O Controller
• Interface: LPC
• Voltage - Supply: 3.3V
• Current - Supply: 15mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1019

Note 1: To properly share and IRQ,
SMSC LPC47B27x
Note: If both UARTs are configured to use different IRQs and the share IRQ bit is set, then both of the
PP Mode Register
Default = 0x3C
on VCC POR,
VTR POR and
HARD RESET
PP Mode Register 2
Default = 0x00
on VCC POR,
VTR POR and
HARD RESET
Serial Port 1
Mode Register
Default = 0x00
on VCC POR,
VTR POR and
HARD RESET
UART IRQs will assert when either UART generates an interrupt.
NAME
NAME
1. Configure UART1 (or UART2) to use the desired IRQ.
2. Configure UART2 (or UART1) to use No IRQ selected.
3. Set the share IRQ bit.
Table 69 - Parallel Port, Logical Device 3 [Logical Device Number = 0x03]
Table 70 - Serial Port 1, Logical Device 4 [Logical Device Number = 0x04]
REG INDEX
REG INDEX
0xF0 R/W
0xF1 R/W
0xF0 R/W
Bits[2:0] Parallel Port Mode
= 100
= 000
= 001
= 101
= 010
= 011
= 111
Bit[6:3] ECP FIFO Threshold
0111b (default)
Bit[7] PP Interupt Type
Not valid when the parallel port is in the Printer
Mode (100) or the Standard & Bi-directional Mode
(000).
= 1
= 0
IRQ level type when the parallel port is in ECP, TEST,
or Centronics FIFO Mode.
Bits[1:0] PPFDC - muxed PP/FDC control
= 00 Normal Parallel Port Mode
= 01 PPFD1:
= 10 PPFD2:
Bits[7:2] Reserved. Set to zero.
Bit[0] MIDI Mode
= 0
= 1
Bit[1] High Speed
= 0
= 1
Bit[6:2] Reserved, set to zero
Bit[7]: Share IRQ
=0 UARTS use different IRQs
=1 UARTS share a common IRQ
See Note 1 below.
DATASHEET
EPP-1.9 and SPP Mode
EPP-1.7 and SPP Mode
Printer Mode (default)
Standard and Bi-directional (SPP) Mode
ECP Mode
ECP and EPP-1.9 Mode
ECP and EPP-1.7 Mode
Pulsed Low, released to high-Z.
IRQ follows nACK when parallel port in EPP
Mode or [Printer,SPP, EPP] under ECP.
MIDI support disabled (default)
MIDI support enabled
High Speed Disabled(default)
High Speed Enabled
- 163 -
Drive 0 is on the FDC pins
Drive 1 is on the Parallel port pins
Drive 0 is on the Parallel port pins
Drive 1 is on the Parallel port pins
DEFINITION
DEFINITION
Rev. 04-17-07
STATE
STATE
C
C