HD64570F Renesas Electronics America, HD64570F Datasheet - Page 129
HD64570F
Manufacturer Part Number
HD64570F
Description
IC SCA SRL COMM ADAPTER 88QFP
Manufacturer
Renesas Electronics America
Datasheet
1.HD64570F.pdf
(469 pages)
Specifications of HD64570F
Applications
ISDN
Interface
Serial
Voltage - Supply
4.5 V ~ 5.5 V
Package / Case
88-QFP
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Bits 7 6 (BRATE1 BRATE0/ADDRS1 ADDRS0: Bit Rate/Address Field Check): Specify
the relationship between the bit rate and the transmit/receive clock in asynchronous mode, and the
checking method for the address field in bit synchronous mode. These bits are used for both
transmission and reception.
Bits 5 4 (TXCHR1 TXCHR0: Transmit Character Length): Specify the character length of
the transmit data in asynchronous mode. Rewriting these bits during operation updates the
character length for subsequent transmit characters.
Bits 3 2 (RXCHR1 RXCHR0: Receive Character Length): Specify the character length of
the receive data in asynchronous mode. Rewriting these bits during operation updates the
character length for subsequent receive characters.
Asynchronous mode
BRATE1, BRATE0 = 0, 0: Bit rate = 1/1 clock rate
BRATE1, BRATE0 = 0, 1: Bit rate = 1/16 clock rate
BRATE1, BRATE0 = 1, 0: Bit rate = 1/32 clock rate
BRATE1, BRATE0 = 1, 1: Bit rate = 1/64 clock rate
For details on asynchronous mode, see section 5.3.1, Asynchronous Mode.
Byte synchronous mode
Reserved. These bits always read 0 and must be set to 0.
Bit synchronous mode
ADDRS1, ADDRS0 = 0, 0: Disables the address field check
ADDRS1, ADDRS0 = 0, 1: Sets single address 1
ADDRS1, ADDRS0 = 1, 0: Sets single address 2
ADDRS1, ADDRS0 = 1, 1: Sets dual address
For details, see Address Field Check, in section 5.3.4, Bit Synchronous Loop Mode.
Asynchronous mode
TXCHR1, TXCHR0 = 0, 0: 8 bits/character
TXCHR1, TXCHR0 = 0, 1: 7 bits/character
TXCHR1, TXCHR0 = 1, 0: 6 bits/character
TXCHR1, TXCHR0 = 1, 1: 5 bits/character
Byte synchronous/Bit synchronous mode
Reserved. These bits always read 0 and must be set to 0.
Asynchronous mode
RXCHR1, RXCHR0 = 0, 0: 8 bits/character
RXCHR1, RXCHR0 = 0, 1: 7 bits/character
RXCHR1, RXCHR0 = 1, 0: 6 bits/character
Rev. 0, 07/98, page 113 of 453
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