mc68qh302 Freescale Semiconductor, Inc, mc68qh302 Datasheet - Page 2

• Manufacturer Part Number: mc68qh302
• Description: Mc68qh302 Quad Hdlc Integrated Multiprotocol Processor
• Manufacturer: Freescale Semiconductor, Inc

The MC68QH302 supports a full ISDN basic rate interface with one serial channel left over to communicate
with the DTE as shown in Figure 2. The dual-channel SCC1 is used to support the two B channels.
MC68QH302
MC145407
RS232-C
Controller
M68000
RISC
Core
EEPROM
Flash +
RAM +
Figure 2. MC68QH302 Supporting a Full ISDN Basic Rate Interface
Note: *SCC1 = Dual channel SCC, each channel used for a B channel
Freescale Semiconductor, Inc.
(2 Channels)
For More Information On This Product,
SCC1
Controllers
Interrupt
Figure 1. MC68QH302 Block Diagram
MC68QH302
MC68QH302 Technical Summary
SCC2
SCC3
SCC1*
Go to: www.freescale.com
Channels
8 DMA
2B + D
General-Purpose
GCI
IDL
SCC2
SCC3
or
Peripheral Bus
+
Channel
DMA
S/T INTF
145572
U-INTF
145574
System Bus
Dual-Ported
1152 Bytes
or
68000
RAM
2 SMCs
4 Chip Selects
SCP
Parallel I/O
+
3 Timers
X-FRMR
Line I/F
20 Address Lines
and
8/16 Data Lines
ROM
RAM
+