tc9447f TOSHIBA Semiconductor CORPORATION, tc9447f Datasheet - Page 6

• Manufacturer Part Number: tc9447f
• Description: Single-chip Audio Digital Signal Processor
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Operation
1. Pin operations
25~40
42, 43
55, 56
3~24
No.
Pin
41
46
54
57
59
60
61
62
63
1
2
STEP [1:0]
CKO [1:0]
TP [0:12]
Omitted
Symbol
ECKO
EBCO
SYNC
ELRO
ECKI
MCK
ELRI
EBCI
CKS
RST
FS
Supplies an external clock to ECKI (for slave operations).
When CKS pin = H, oscillation activated. When CKS = L, pulled down internally.
Test pins (leave open) (TPx description is omitted.)
1 fs output
Timing output pins. The output frequency is set from the microcontroller. (CMD-40h)
Master clock output pin. Output is validated/invalidated and the frequency is switched from the
microcontroller. (CMD-4Dh)
Source oscillation selector pin
Source oscillation frequency/ASP operation speed switching pins
Reset input (L at initialization)
Program operation SYNC signal input pin. Valid when program is executing a slave operation.
LR clock signal input pin for serial output data. Valid when serial data are output in a slave operation.
LR clock signal input pin for serial input data. Valid when serial data are input in a slave operation.
Bit clock signal input pin for serial output data. Valid when serial data are output in a slave operation.
Bit clock signal input pin for serial input data. Valid when serial data are input in a slave operation.
STEP1 STEP0
MCKE
*
CKS
: don't care
2
0
1
0
1
0
1
0
1
CKOS0
1
0
1
0
1
Fixed to L
Output valid (initial value)
XI/XO pin
ECKI/ECKO pin
0
1
*
Source Oscillation
0
0
1
0
1
0
1
0
1
MCK
Fixed to L (initial value)
fs2
fs4
fs8
fs16
fs32
fs64
fs128
Source Oscillation Frequency
CKO0
512 fs
768 fs
6
MCKE
0
1
Function
Š
don't care 256 fs
STEP1
For testing
0
1
2
0
1
CKOS1
Source oscillation (XI/XO or ECKI)
For testing
1
0
1
0
1
No. of ASP Operation Steps
0
0
1
0
1
0
1
0
1
Fixed to L (initial value)
fs2
fs4
fs8
fs16
fs32
fs64
1/2 XI or 1/2 ECKI
340/fs
510/fs
MCK
CKO1
2002-02-05
TC9447F