LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 163

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

Specifications of LPC47N227TQFP

• Lead Free Status / RoHS Status: Not Compliant

CR2D can only be accessed in the configuration state and after the CSR has been initialized to 2DH.
CR2D is used to set the IR Half Duplex Turnaround Delay Time for the IR port. This value is 0 to
25.5msec in 100µsec increments.
The IRCC v2.0 block includes an 8 bit IR Half Duplex Time-out register in SCE Register Block 5,
Address 1 that interacts with configuration register CR2D. These two registers behave like the other
IRCC Legacy controls where either source uniformly updates the value of both registers when either
register is explicitly written or following a device-level POR. IRCC software resets do not affect these
registers.
The IR Half Duplex Time-out is programmable from 0 to 25.5mS in 100#S increments, as follows:
IR HALF DUPLEX TIME-OUT = (CR2D) x 100#S
CR2E
CR2E can only be accessed in the configuration state and after the CSR has been initialized to 2EH.
CR2E is directly connected to SCE Register Block Three, Address 0x05 in the IRCC v2.0 block.
CR2F
CR2F can only be accessed in the configuration state and after the CSR has been initialized to 2FH.
CR2F is directly connected to SCE Register Block Three, Address 0x06 in the IRCC v2.0 block.
CR30
CR30 can only be accessed in the configuration state and after the CSR has been initialized to 30H.
CR30 is used to set the Runtime Register Block base address ADR[11:4].
Block base address can be set to 240 locations on 16-byte boundaries from 100H – FF0H. To disable
Runtime Registers Block, set ADR11 – ADR8 to zero.
BIT NO.
BIT NO.
BIT NO.
0-7
0-7
0-7
Software Select A These bits are directly connected to SCE Register Block Three,
Software Select B These bits are directly connected to SCE Register Block Three,
IR Half Duplex
Type: R/W
Type: R/W
Type: R/W
BIT NAME
BIT NAME
BIT NAME
Time Out
These bits are used to set the IR Half Duplex Turnaround Delay
Time for the IR port. This value is 0 to 25.5msec in 100µsec
increments.
Address 0x05 in the IRCC v2.0 block.
Address 0x06 in the IRCC v2.0 block.
IR Half Duplex Timeout
Software Select A
Software Select B
Table 97 – CR2D
Table 98 – CR2E
Table 99 – CR2F
163
DESCRIPTION
DESCRIPTION
DESCRIPTION
Default: 0x03 on VCC POR
Default: 0x00 on VCC POR
Default: 0x00 on VCC POR
The Runtime Register