Cypress CY7C67200 Computer Drive User Manual


 
CY7C67200
Document #: 38-08014 Rev. *G Page 45 of 78
Transmit Ready (Bit 4)
The Transmit Ready bit is a read only bit that indicates if the
HSS Transmit FIFO is ready for the CPU to load new data for
transmission.
1: HSS transmit FIFO ready for loading
0: HSS transmit FIFO not ready for loading
Packet Mode Select (Bit 3)
The Packet Mode Select bit selects between Receive Packet
Ready and Receive Ready as the interrupt source for the
RxIntr interrupt.
1: Selects Receive Packet Ready as the source
0: Selects Receive Ready as the source
Receive Overflow Flag (Bit 2)
The Receive Overflow Flag bit indicates if the Receive FIFO
overflowed when set. This flag can be cleared by writing a ‘1’
to this bit.
1: Overflow occurred
0: Overflow did not occur
Receive Packet Ready Flag (Bit 1)
The Receive Packet Ready Flag bit is a read only bit that
indicates if the HSS receive FIFO is full with eight bytes.
1: HSS receive FIFO is full
0: HSS receive FIFO is not full
Receive Ready Flag (Bit 0)
The Receive Ready Flag is a read only bit that indicates if the
HSS receive FIFO is empty.
1: HSS receive FIFO is not empty (one or more bytes is
reading for reading)
0: HSS receive FIFO is empty
HSS Baud Rate Register [0xC072] [R/W]
Figure 49. HSS Baud Rate Register
Register Description
The HSS Baud Rate register sets the HSS Baud Rate. At reset, the default value is 0x0017 which sets the baud rate to 2.0 MHz.
Baud (Bits [12:0])
The Baud field is the baud rate divisor minus one, in units of 1/48 MHz. Therefore the Baud Rate = 48 MHz/(Baud + 1). This puts
a constraint on the Baud Value as follows: (24 – 1) <
Baud > (5000 – 1)
Reserved
All reserved bits must bit written as ‘0’.
Bit # 15 14 13 12 11 10 9 8
Field Reserved Baud...
Read/Write - - - R/W R/W R/W R/W R/W
Default 0 0 0 0 0 0 0 0
Bit # 7 6 5 4 3 2 1 0
Field ...Baud
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Default 0 0 0 1 0 1 1 1
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