Motorola MOSCAD 68P02958C00-B User Manual page 343

6. Channel access semaphore.
7. MTE signal on events that took place.
8. Whether FSK, DPSK or FSK.
9. Defines the functionality of port B in 68.
10. Determines whether the pin is for input or output.
11. Defines the value of the pin (previous parameter).
12. Number of empty Rx descriptors.
13. Number of busy Rx descriptors.
14. Number of busy Tx descriptors.
15. Number of empty Tx descriptors.
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Modem hardware control and status :-
Internal software data (key)
Internal hardware registers
Internal hardware parameters
Scc configuration register
Scc mode register
Scc data sync. register
Scc event register
Scc mask register
Scc status register
Channel control register
Channel direction register
Channel data register
1. Device-key address.
2. H-W registers address.
3. H-W parameters address.
4. Determines the clock direction (Rx or Tx) and the baud rate.
5. Determines the work mode — HDLC or UART.
6. Determines the HDLC flags.
7. The events that generate the interrupt.
8. Mask to block the interrupt.
9. The CM (Channel Monitor) and TD (Tone Detect) statuses.
(DATA) : %% 1
(IREG) : %% 2
(IRAM) : %% 3
(SCON) : %% 4
(SCM)
(DSR)
(SCCE) : %% 7
(SCCM) : %% 8
(SCCS) : %% 9
(PBCNT): %% 10
(PRDDR): %% 11
(PBDAT): %% 12
C-51
Software Diagnostics Output
: %% 5
: %% 6