HD64570F16 Renesas Electronics America, HD64570F16 Datasheet - Page 137

• Manufacturer Part Number: HD64570F16
• Description: IC SCA SRL COMM ADAPTER 88QFP
• Manufacturer: Renesas Electronics America

Specifications of HD64570F16

• Applications: ISDN
• Interface: Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Package / Case: 88-QFP
• Mounting Type: Surface Mount
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -20C to 75C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

The RX clock source register (RXS) specifies the receive clock source and the baud rate of the
baud rate generator (BRG) in the receiver. For the baud rate generator, see section 5.6, Baud Rate
Generator.
This register is reset under either of the following conditions:
Hardware reset
Channel reset command
Async
Byte sync
Bit sync HDLC
Read/Write
Initial value
Notes:
Receive clock source
000:
010:
100:
110:
111:
Others:
5.2.5
1. Reserved. This bit always reads 0 and must be set to 0.
2. Reserved. When these settings are selected, normal operation is not guaranteed.
RXC line input
RXC line input (noise suppression)
Internal baud rate generator (BRG) output
ADPLL output
(BRG output for ADPLL operating clock)
ADPLL output
(RXC line input for ADPLL operating clock)
Reserved
MSCI RX Clock Source Register (RXS)
—
—
7
0
*1
RXCS2
R/W
*2
6
0
RXCS1
R/W
5
0
RXCS0
R/W
4
0
RXBR3
R/W
3
0
RXBR2
R/W
2
0
Receiver baud rate
• Clock division ratio
0000:
0001:
0010:
0011:
0100:
0101:
0110:
0111:
1000:
1001:
Others:
Rev. 0, 07/98, page 121 of 453
RXBR1
R/W
1/1
1/2
1/4
1/8
1/16
1/32
1/64
1/128
1/256
1/512
1
0
Reserved
RXBR0
R/W
0
0
*2