ds265188-port-t1-e1-j1-transc Maxim Integrated Products, Inc., ds265188-port-t1-e1-j1-transc Datasheet - Page 83

• Manufacturer Part Number: ds265188-port-t1-e1-j1-transc
• Description: Ds26518 8-port T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

9.10.3.3
The HDLC-256 status registers in the DS26518 allow for flexible software interface to meet the user’s preferences.
When receiving HDLC-256 messages, the host can choose to be interrupt driven or to poll to desired status
registers, or a combination of polling and interrupt processes can be used.
for using the DS26518 HDLC-256 receiver.
Figure 9-19. Receive HDLC-256 Message Example
Receive HDLC-256 Example
Read RH256FDR1, 2;
Read RH256FDR1, 2;
HDLC-256 Controller
(RH256CR1.RFRST)
Configure Receive
(RHDAIE, RPEIE)
Enable Interrupts
Read RH256SRL
(RH256CR1,2)
N = 8xRDAL -1
INTB Active?
RHDAL Set?
Reset FIFO
N = N -1
N = 0 ?
YES
YES
NO
NO
NO
YES
Read RH256FDR1,2
until end of packet
exit
RPE Set?
reached
exit
83 of 313
NO
exit
Figure 9-19
DS26518 8-Port T1/E1/J1 Transceiver
shows an example routine