HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 813

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

(2)
AFEIF module supports hardware control STLC7550 that is an AFE manufactured by ST
microelectronics. Figure 22.6 shows the AFE control sequence.
HC Control Sequence
Write "1" to HC bit of ACTR1
1. If the CPU write
2. AFE fetches the HC1's status of
3. AFE output the FS at the next 1/2 sampling period and then AFEIF transfers the control
4. AFEIF keeps AFE_HC1 to
5. AFE fetches the AFE_HC1's status of
Write 1 to HC bit of ACTR1
AFE_FS
AFE_TXOUT
AFE_HC1
HC0: Kept to 1
transmit next data.
word in synchronization with AFE_FS.
word.
"
1
"
to the HC bit of ACTR1, the AEFIF drives AFE_HC1 to
Figure 22.6
Data word
(1)
"
H
AFEIF
"
for 2nd AFE_FS and return to
"
H
"
HC1 goes to 1
HC1 goes to 0
at rising edgge of next AFE_FS.
"
AFE Control Sequence
L
DATA
DATA
DATA
DATA
DATA
DATA
"
and changes the mode of itself.
1/2 sampling period
(2)
STLC7550
Data word
Section 22
FS for data
FS for data
FS for data
FS for control word
FS for data
FS for data
Sampling period
Rev. 3.00 Jan. 18, 2008 Page 751 of 1458
(3)
AFE mode change
"
Control word
L
"
Analog Front End Interface (AFEIF)
after transmit the control
(4)
(5)
Data word
"
Mode change
H
"
right after
REJ09B0033-0300