MC68302EH16C Freescale Semiconductor, MC68302EH16C Datasheet - Page 384

• Manufacturer Part Number: MC68302EH16C
• Description: IC MPU MULTI-PROTOCOL 132-PQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68302EH16C

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-MQFP, 132-PQFP
• Controller Family/series: 68K
• Core Size: 32 Bit
• Ram Memory Size: 1152Byte
• Cpu Speed: 16MHz
• No. Of Timers: 3
• Embedded Interface Type: SCP, TDM
• Digital Ic Case Style: PQFP
• Rohs Compliant: Yes
• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 16MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 5V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 132
• Package Type: PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

MC68302 Applications
To support access to the S/T interface D-channel common resource, the MC145475 pro-
vides two additional signals. The DREQ signal is asserted by the device wanting to transmit
a frame on the D-channel. The availability of the D-channel is signaled by the MC145475 by
asserting DGRT.
In case of a collision, DGRT will be negated, signaling that D-channel transmission must be
aborted. If the MC68302 is programmed to do so, an automatic retransmission will take
place when the D-channel is available again.
The MC68302 generates two serial data strobe signals, SDS1 and SDS2, which are pro-
grammed to envelope the B1 or/and B2 time slots. The strobe is helpful in gating a device
to the proper B-channel without the need for additional frame synchronization logic.
The SDSs are programmable and each can be set to envelope B1, B2, or B1 lB2 by setting
the SDC1 and SDC2 bits in the serial interface mode register (SIMR). In this application,
SDS is used to gate a CODEC to the proper B-channel.
D-34
MC68302
L1RXD
IDL BUS TO OTHER SLAVES
L1CLK
L1TXD
L1SY1
L1GR
L1RQ
Figure D-14. IDL Bus to Other Slaves
MC68302 USER’S MANUAL
V CC
V CC
1.2 K
1.2 K
IDL_CLOCK
IDL_SYNC
DREQ
DGRT
IDL_RX
IDL_TX
DREQ
DGRT
IDL_CLOCK
IDL_RX
IDL_TX
IDL_SYNC
MC145475
MOTOROLA