III PERIPHERAL BLOCK: MONITORED MOBILE ACCESS INTERFACES
CNT2, CNT1: Output port data (D[1:0]) /Communications block output port data register (0x020000A)
Regardless of the communications macro select (MCRS) register (D[1:0]/0x200000)
Table 10.16 Communications Block Outputs CNT2 and CNT1
Output port data | Output pins | Output level |
CNT2 = 1 | CNT2 | Low |
CNT2 = 0 |
| High |
CNT1 = 1 | CNT1 | Low |
CNT1 = 0 |
| High |
GOUTE: GOUT output enable (D7) / Communications block input port data register (0x020000C)
Setting this bit to "1" connects the RI input to the GOUT output pin.
Table 10.17 Communications Block Output GOUT
GOUTE setting | RI input level | GOUT output level | Notes |
GOUTE = 1 | High | High | Pass through |
| Low | Low | output |
GOUTE = 0 | High | High | Output disabled |
| Low | High |
|
MIPORT1, MIPORT0: Input port data (D[1:0]) / Communications block input port data register (0x020000C)
Regardless of the communications macro select (MCRS) register (D[1:0]/0x200000)
Table 10.18 Communications Block Inputs DSR and RI
Input pin | Input Level | Register Data |
DSR | High | MIPORT1 = 1 |
| Low | MIPORT1 = 0 |
RI | High | MIPORT0 = 1 |
| Low | MIPORT0 = 0 |
RI, CTS, DCD, DSR: Modem status (D[11:8]) / Communications block modem status register (0x020002A)
Regardless of the communications macro select (MCRS) register (D[1:0]/0x200000)
Table 10.19 Communications Block Modem Status
Input pin | Input Level | Register Data |
RI | High | RI = 0 |
| Low | RI = 1 |
CTS | High | CTS = 0 |
| Low | CTS = 1 |
DCD | High | DCD = 0 |
| Low | DCD = 1 |
DSR | High | DSR = 0 |
| Low | DSR = 1 |
S1C33210 FUNCTION PART | EPSON |