CS7654 datasheet(52/62 Pages) CIRRUS

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CS7654

Jump Control 1 (41h at SA 0x34h)

This register contains the 8 LSBs of the EEPROM start address used when the JUMP bit is set (bit 2 register 42h

at SA 0x34h).

EEPROM Control (42h

at SA 0x34h)

State machine commands for loading EEPROM data after reset. (see extended EPROM configuration)

HALT

Writing a 1 to this bit stops the reading of EEPROM data.

SKIP

Writing a 1 to this bit forces the next EEPROM read cycle to occur at the address held in the

Configuration Control (n) register, where "n" is the value held in the Configuration Index Regis-

ter (43h

at SA 0x34h)

JUMP

Writing a 1 to this bit forces the next EEPROM access to occur at the address held in registers

40h and 41h

at SA 0x34h .

Configuration Index Register (43h at SA 0x34h)

This contains the DIP switch status at reset. (see extended EPROM configuration) The value of this register selects

the appropriate Configuration register when the SKIP command is executed.

Reserved Registers (44h - FEh at SA 0x34h)

These registers are reserved and return a value of 00h when read.

Station Address Register (FFh at SA 0x34h)

CS7654 station address of the color processor, 7 MSBs (the LSB of the complete 8-bit station address is determined

by the LSB which acts as a read/write direction bit).

765

4321

JMP7

JMP6

JMP5

JMP4

JMP3

JMP2

JMP1

JPM0

R/W

765

4321

res

JUMP

SKIP

HALT

R/W

765

4321

res

SW2

SW1

SW0

Reserved

R/W

765

4321

res

SA6

SA5

SA4

SA3

SA2

SA1

SA0

Reserved

R/W

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