Renesas H8S/2111B Manual do Utilizador descarregar pdf (Página 359)

100

101

Rev. 1.00, 05/04, page 325 of 544

Continuous Receive Operation:

Figure 13.20 shows the sample flowchart for the operations in slave receive mode (HNDS = 0).

Slave receive mode

End

Read IRIC in ICCR

Clear IRIC in ICCR

Read AASX, AAS and ADZ in ICSR

Read TRS in ICCR

Read IRIC in ICCR

Clear IRIC in ICCR

Read ICDR

Wait for one frame

Read ICDR

Set ACKB = 0 in ICSR

Set ACKB = 1 in ICSR

Set HNDS = 0 in ICXR

General call address processing

* Description omitted

Set MST = 0

and TRS = 0 in ICCR

IRIC = 1?

Yes

ICDRF = 1?

Yes

TRS = 1?

IRIC = 1?

ICDRF = 1?

Yes

AAS = 1

and ADZ = 1?

[1] Select slave receive mode.

[2] Read the receive data remaining unread.

[3] to [7] Wait for one byte to be received (slave address + R/W)

(Set IRIC at the rise of the 9th clock)

[9] Wait for ACKB setting and set acknowledge data

for the last reception

(after the rise of the 9th clock of (n-1)th byte data)

[15] Clear IRIC

[14] Read the last receive data

[8] Clear IRIC

[13] Clear IRIC

[10] Read the receive data. The first read is a dummy read.

[11] Wait for one byte to be received

(Set IRIC at the rise of the 9th clock)

[12] Detect stop condition

Slave transmit mode

Yes

Read ICDR

Yes

ICDRF = 1?

(n-2)th-byte

reception?

ESTP = 1 or

STOP = 1?

* n: Address + total number of bytes received

Figure 13.20 Sample Flowchart for Operations in Slave Receive Mode (HNDS = 0)

1 2 ... 354 355 356 357 358 359 360 361 362 363 364 ... 581 582

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