Publication No. PPC11A-HRM/1
Control and Status Registers 89
5.20.3 COM Port 4-Wire Configuration Register (Offset 0x6A2)
NOTE
The processor UARTs can be configured as either 2x4 wire or 4x2 wire in the processor's RCW. The FPGA
always reports the COM ports as 2x4 wire because it may not have access to the RCW. Software should
refer to the RCW contents to determine the final COM port configuration.
Bits
Description
Default
7 & 6
Reserved (COM ports 8 and 7 are not available)
00
b
5
COM port 6 always supports 4-wire mode:
1 = COM port 6 is available in 4-wire (RS232/RS422) mode
4
COM port 5 always supports 4-wire mode:
1 = COM port 5 is available in 4-wire (RS232/RS422) mode
3
COM port 4 always supports 4-wire mode:
1 = COM port 4 is available in 4-wire (RS232/RS422) mode
2
COM port 3 always supports 4-wire mode:
1 = COM port 3 is available in 4-wire (RS232/RS422) mode
1
COM port 2 always supports 4-wire mode:
1 = COM port 2 is available in 4-wire (RS232/RS422) mode
0
COM port 1 always supports 4-wire mode:
1 = COM port 1 is available in 4-wire (RS232/RS422) mode
5.20.4 COM Port Modem Configuration Register (Offset 0x6A3)
The PPC11A does not support full modem lines.
Bits
Description
Default
7 to 0
COM ports 8:1 modem configuration:
0 = Full modem line support is not available
0x00
5.20.5 SATA Port Availability Register (Offset 0x6A4)
This register reports which SATA ports are physically connected to the backplane.
Bits
Description
Default
7 to 2
Reserved
000000
b
1
SATA port 1 availability:
1 = SATA port is available
0 = SATA port is not available
0
SATA port 0 availability:
1 = SATA port is available
0 = SATA port is not available
Содержание PPC11A
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