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III PERIPHERAL BLOCK: MONITORED MOBILE ACCESS INTERFACES
B-III-10-18 EPSON S1C33210 FUNCTION PART
Mobile Access Interface Interrupts
Overview
The mobile access interface module generates eight interrupt requests, mapped according to the communications
mode under program control to five interrupt request lines to the CPU core.
Interrupt Types
Table 10.8 lists the interrupt requests for each communications mode.
Table 10.8 Interrupt Types
Communications
mode
Symbol Interrupt Types
PDC
communications
mode
PDCINT PDC interrupt
PHS communications
mode
PRINT
PTINT
PHS receive interrupt
PHS transmit interrupt
HDLC
communications
mode
RXINT
TXINT
SPINT
ESINT
HDLC receive interrupt
HDLC transmit interrupt
HDLC Sp interrupt
HDLC E/S interrupt
All communications
modes
MSINT Modem status change interrupt
Note:The UART communications mode uses serial interface Ch. 3 transmit and receive interrupts.
(1) PDCINT = PDC interrupt
Interrupt source Falling edge in PDC frame signal input
Condition Every 20 ms, at falling edges in the PDC frame signal, regardless of the TXEN and RXEN
settings in the PDC command register
To clear Write "1" to the PDCINT bit (D0/0x0200100)
(2) PRINT = PHS receive interrupt
Interrupt source Receiving frame data from PHS device
Condition Receiving 640-bit PIAFS frame. Every 20 ms for 32 kbps operation, every 10 ms for 64 kbps
operation
To clear Write "1" to the RXINT bit in the PHS receive status register (D7/0x0200206)
(3) PTINT = PHS transmit interrupt
Interrupt source Completion of frame transmission to PHS device
Condition Transmission of 640-bit PIAFS frame. Every 20 ms for 32 kbps operation, every 10 ms for 64
kbps operation
To clear Write "1" to the TXINT bit in the PHS transmit status register (D7/0x0200202)
(4) RXINT = HDLC receive interrupt
Interrupt source The data in the receive queue or receive block satisfies the conditions below.
Condition 1. If the setting specifies Rx INT and Sp INT on first character received, when the hardware
receives the first byte
• after a reset (hardware or software) or
• after the software writes "1" to the Rx INT on next receive character command bit in
the HDLC receive control register (D0/0x0200314).
2. If the setting specifies Rx INT and Sp INT on queue threshold, when the number of
characters in the receive queue exceeds the threshold setting in the HDLC receive queue
interrupt threshold register (D[2:0]/0x0200310).
To clear Write "1" to the reset Tx INT bit