LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 101

• Manufacturer Part Number: LPC47N237-MD
• Description: 3.3V I/O CONTROLLER FOR PORT REPLICATORS AND DOCKING STATIONS
• Manufacturer: SMSC [SMSC Corporation]

3.3v I/O Controller for Port Replicators and Docking Stations
17.4.18 CR12 - CR13
Note :
Note :
SMSC DS – LPC47N237
CR12 and CR13 are the LPC47N237 Configuration Ports base address registers.
used to relocate the Configuration Ports base address beyond the power-up defaults determined by the
SYSOPT pin programming.
CR12 contains the Configuration Ports base address bits A[7:0]. CR13 contains the Configuration Ports
base address bits A[10:8]. The address bits A[15:11] must be ‘00000’ to access the configuration port.
The Configuration Ports base address is relocatable on even-byte boundaries; i.e., A0 = ‘0’.
At power-up the Configuration Ports base address is determined by the SYSOPT pin programming. To
relocate the Configuration Ports base address after power-up, first write the lower address bits of the new
base address to CR12 and then write the upper address bits to CR13.
Writing CR13 changes the Configuration Ports base address.
The Configuration Ports Base Address is relocatable on even-byte boundaries; i.e., A0 = “0”.
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
Test 16
Test 17
Test 18
Test 19
Test 20
Test 21
Test 22
Test 23
A1
A2
A3
A4
A5
A6
A7
Configuration Ports Base Address Byte 0 (Note)
Read Only. A read returns 0.
Configuration Ports Base Address Byte 0 for decoder.
DATASHEET
Table 17.13 – CR11
Table 17.14 – CR12
Page 101
Test 3
RESERVED FOR SMSC USE
Default : 0x2E (SYSOPT=0)
DESCRIPTION
DESCRIPTION
Default: 0x00 on VCC POR
0x4E (SYSOPT=1)
on VCC POR and HARD RESET
These registers are
Revision 0.3 (10-26-04)