TEF6901AH/V5S,557 Datasheet TEF6901AH/V5S,518, TEF6901AH/V5S,557 | P25-P27

Product data sheet Rev. 03 — 20 March 2008 25 of 107

NXP Semiconductors

TEF6901A

Integrated car radio

Fig 10. Write with state machine action and swap, no preload

001aab524

address MSA

byte 1

byte 2

byte 3

byte 4

byte 5

byte 2 byte 3 byte 4 byte 5

P

swap

BUFFER

CONTROL

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

byte 0

new

current

MODE = AFU, jump or check

SA = 2

state machine start

Product data sheet Rev. 03 — 20 March 2008 26 of 107

NXP Semiconductors

TEF6901A

Integrated car radio

Fig 11. Write with state machine action, preload and swap

address MSA

byte 1

byte 2

byte 3

byte 4

byte 5

byte 3 byte 4

byte 5 P

BUFFER

CONTROL

byte 0

new

current

MODE = preset or search

SA = 3

preload

current

state machine start

current

byte 1 current

current

byte 2 current

current

byte 3 current

new

byte 4 current

new

byte 5 current

new

001aab525

swap

Product data sheet Rev. 03 — 20 March 2008 27 of 107

NXP Semiconductors

TEF6901A

Integrated car radio

8.2.1 Mode and subaddress byte for write

Fig 12. Write without state machine action, with preload and swap

byte 1

byte 2

byte 3

byte 4

byte 5

BUFFER

CONTROL

byte 0

byte 1

byte 2

byte 3

byte 4

byte 5

byte 0

new

current

address MSA byte 3 byte 4

byte 5 P

MODE = load

SA = 3

preload

001aab526

swap

Table 23. MSA - format of mode and subaddress byte

7 6 5 4 3 2 1 0

MODE2 MODE1 MODE0 SA4 SA3 SA2 SA1 SA0

Table 24. MSA - mode and subaddress byte bit description

Bit Symbol Description

7 to 5 MODE[2:0] mode tuning action; see

Table 25

4 to 0 SA[4:0] Subaddress; 0 0000 to 1 1111 = write data byte subaddress 00h to 1Fh.

The subaddress value is auto-incremented and will revert from

SA = 1Fh to SA = 00h. The auto-increment function cannot be disabled.

TEF6901AH/V5S,557

TEF6901AH/V5S,557

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