LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 158

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

Specifications of LPC47N227TQFP

• Lead Free Status / RoHS Status: Not Compliant

CR24 can only be accessed in the configuration state and after the CSR has been initialized to 24H.
CR24 is used to select the base address of Serial Port 1 (UART1).
locations on 8-byte boundaries from 100H - 3F8H.
zero. Set CR24.0 to 0 when writing the UART1 Base Address.
Serial Port 1 Address Decoding: address bits A[15:10] must be ‘000000’ to access UART1 registers.
A[2:0] are decoded as XXXb.
CR25
CR25 can only be accessed in the configuration state and after the CSR has been initialized to 25H.
CR25 is used to select the base address of Serial Port 2 (UART2). Serial Port 2 can be set to 96
locations on 8-byte boundaries from 100H - 3F8H.
zero. Set CR25.0 to 0 when writing the UART2 Base Address.
Serial Port 2 Address Decoding: address bits A[15:10] must be ‘000000’ to access UART2 registers.
A[2:0] are decoded as XXXb.
BIT NO.
BIT NO.
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Type: R/W
Type: R/W
BIT NAME
BIT NAME
Reserved
Reserved
ADR3
ADR4
ADR5
ADR6
ADR7
ADR8
ADR9
ADR3
ADR4
ADR5
ADR6
ADR7
ADR8
ADR9
UART1 Base Address Register
UART2 Base Address Register
Read Only. A read returns 0.
Serial Port 1 Base Address bits for decoder.
Read Only. A read returns 0.
Serial Port 2 Base Address bits for decoder.
Table 85 - CR24
Table 86 - CR25
158
To disable Serial Port 1, set ADR9 and ADR8 to
To disable Serial Port 2, set ADR9 and ADR8 to
DESCRIPTION
DESCRIPTION
Default: 0x00 on VCC POR
Default: 0x00 on VCC POR
The serial port can be set to 96