SC18IS601 Philips Semiconductors, SC18IS601 Datasheet - Page 15

• Manufacturer Part Number: SC18IS601
• Description: (SC18IS600 / SC18IS601) SPI to IC-bus interface
• Manufacturer: Philips Semiconductors

NXP Semiconductors
SC18IS600_601_3
Product data sheet
6.6.7 Write to SC18IS600/601 internal registers
6.6.8 Read from SC18IS600/601 internal register
A Write Register function is initiated by sending a 0x20 command followed by an internal
register address to be written (see
address. Only one register can be accessed in a single transaction. There is no
auto-incrementing of the register address.
A Read Register function is initiated by sending a 0x21 command followed by an internal
register address to be read (see
read register is returned by the SC18IS600 on the MISO pin. Only one register can be
accessed in a single transaction. There is no auto-incrementing of the register address.
Note that write and read from internal registers are processed immediately as soon as the
SC18IS600/601 determines the intended register.
Fig 18. Write to SC18IS600/601 internal registers
Fig 19. Read from SC18IS600/601 internal register
SPI host sends
SPI host sends
COMMAND
COMMAND
SCLK
SCLK
MOSI
MOSI
MISO
0x20
CS
0x21
CS
Rev. 03 — 13 December 2006
REGISTER
character 0x20
character 0x21
REGISTER
X
X
Section
Section
DATA
BYTE
REGISTER
DATA
6.1) and a dummy byte. The data byte of the
6.1). The register data byte follows the register
register X
register X
SC18IS600/601
dummy byte
data byte
data byte
SPI to I
002aab723
002aab724
© NXP B.V. 2006. All rights reserved.
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C-bus interface
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