|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| J7: (JRS232) Serial Port Connector |
|
|
| |||
|
|
| Front View |
| |||
|
|
|
|
|
|
|
|
| Pin # | Symbol | Function | Description | Notes |
| |
|
|
|
|
|
|
| |
| 1 | N.C. |
| No connection |
|
| |
| 2 | DTR | BIDIRECT | Data Terminal Ready | Just tied to “DSR” |
| |
| 3 | TXD/ | OUTPUT | Send Data | Transmit data to host |
| |
| 4 | CTS | INPUT | Clear to Send | Host Ready bit |
| |
| 5 | RXD/ | INPUT | Receive Data | Receive data from host |
| |
| 6 | RTS | OUTPUT | Request to Send | PMAC Ready bit |
| |
| 7 | DSR | BIDIRECT | Data Set Ready | Just tied to “DTR” |
| |
| 8 | N.C. | OUTPUT | No Connection |
|
| |
| 9 | GND | COMMON | PMAC Common |
|
| |
| 10 | +5V | OUTPUT | +5VDC Supply | Power supply out |
| |
|
|
|
|
|
|
|
|
|
|
|
| C18 | +5V |
| |
|
|
|
|
|
| ||
J7 | C17 | .1UF | C2+ | ||
| |||||
|
|
|
| ||
(JRS232) | .1UF | 6 | V- | ||
C16 | 4 | ||||
| |||||
|
|
|
| ||
| J7 | .1UF | 5 |
| |
N.C. | 1 | C2- | |||
|
| ||||
DTR | 2 | TXD- | 14 |
| |
TXD- | 3 | CTS |
| TXD | |
CTS | 4 | RXD- | 13 |
| |
RXD- | 5 | RTS | 7 | RXD | |
RTS | 6 |
| RTS | ||
DSR | 7 |
|
| ||
N.C. | 8 |
| 8 | CTS | |
GND | 9 |
|
| ||
+5V | 10 |
|
|
| |
HEADER 10 | +5V |
|
| ||
|
|
|
| ||
VCC 16
15 VSS
|
|
|
| U5 |
|
| C14 | ||||
|
|
|
|
|
|
|
| ||||
|
|
|
| 2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
| +V |
|
| .1UF | |||||||
|
| 1 |
|
|
| C15 | |||||
|
|
|
|
|
|
| |||||
| C1+ |
|
|
|
|
|
|
|
| ||
|
| 3 |
|
|
|
|
|
|
| ||
| C1- |
|
|
| .1UF | ||||||
|
| 11 |
|
|
| TXD | |||||
| TXD |
|
|
|
| ||||||
|
| 12 |
|
|
| RXD | |||||
RXD |
|
|
|
| |||||||
| 10 |
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
| |
| RTS |
|
|
|
| CTS- | |||||
|
|
|
|
| |||||||
|
| 9 |
|
|
| ||||||
|
|
|
|
| |||||||
|
|
|
|
|
|
| |||||
| CTS |
|
| ||||||||
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
MAX202ECSE |
|
|
|
|
|
| |||||
(SOL16) |
|
|
|
|
|
|
|
| |||
GND
Circuitry for J7- JRS232 Interface
24 | 3U |
