DS1670 Maxim, DS1670 Datasheet - Page 10

• Manufacturer Part Number: DS1670
• Description: The DS1670 portable system controller is a circuit that incorporates many of the functions necessary for low-power portable products integrated into one chip
• Manufacturer: Maxim

Address and data bytes are always shifted LSB first into the I/O pin. Any transaction requires the
address/command byte to specify a read or write to a specific register followed by one or more bytes of
data. The address byte is always the first byte entered after CS is driven high. The most significant bit
(
will occur. If this bit is 1, one or more write cycles will occur.
Data transfers can occur 1 byte at a time or in multiple-byte burst mode. After CS is driven high an
address is written to the DS1670. After the address, one or more data bytes can be read or written. For a
single-byte transfer 1 byte is read or written and then CS is driven low. For a multiple-byte transfer,
multiple bytes can be read or written to the DS1670 after the address has been written. Each read or write
cycle causes the register address to automatically increment. Incrementing continues until the device is
disabled. After accessing register 0Eh, the address wraps to 00h.
Data transfer for single-byte transfer and multiple-byte burst transfer is illustrated in Figures 7 and 8.
SINGLE-BYTE DATA TRANSFER Figure 7
CS
SCLK
MULTIPLE-BYTE BURST TRANSFER Figure 8
RD
CS
SCLK
I/O
/WR) of this byte determines if a read or write will take place. If this bit is 0, one or more read cycles
A0
A1
A2
ADDRESS
A3
BYTE
A4
A5
A6
BYTE 0
DATA
RD
WR
D0
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D1
BYTE 1
DATA
D2
D3
BYTE N
D4
DATA
D5
D6
D7
DS1670