Z85233 Datasheet, PDF (317/317 Pages) Zilog, Inc. – The Zilog SCC Serial Communication Controller

SCC™/ESCC™ User’s Manual
Zilog ESCC^™ Controller
APPLICATIONS
Q. Which of the following is a benefit from deeper
FIFOs offered by the ESCC?
a. More CPU bandwidths available for other system
tasks
b. Can support faster data rates on each channel
c. Can support more channels for the same CPU
d. All of the above
A. (d) (a), (b) and (c) are consequences of reduction in in-
terrupt frequency that allows more horsepower to be
delivered from the CPU.
Q. Which of the following CRC polynomials is sup-
ported in ESCC?
a. CRC-16
b. CRC-32
c. (CRC-CCITT
d. (a) and (c)
e. (b) and (c)
A. (d) CRC-32 is not supported in ESCC.
Q. How long does it usually take for the customer to
migrate from SCC to ESCC in order to take the ad-
vantage of the FIFO?
a. Less than 3 month
b. About 6 month
c. About a year
A. (a) Since the ESCC is a drop-in replacement to the
SCC and using the deeper FIFO only requires minimal
efforts.
Q. Which of the following is an applications support
the tool for ESCC:
a. Sealevel Board
b. (Electronic Programmers Manual
c. Application Note “Boost Your System
Performance Using the Zilog ESCC”“
d. All of the above
A. (d)
Q. Which of the following is a target application for
the ESCC?
a. AppleTalk-LocalTalk Peripherals
b. X.25 Packet Switches
c. SNA connectivity products
d. All of the above
A. (d) ESCC could support the data rate and protocol re-
quired in the above applications.
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