72720YV Datasheet, PDF (11/14 Pages) Sanyo Semicon Device – Single-Chip RDS Signal-Processing System IC

LC72720Y, 72720YV
Serial Data Input and Output Methods
Data is input and output using the CCB (computer control bus), which is the Sanyo audio IC serial bus format. This IC
adopts an 8-bit address CCB format.
(LSB)
Address
(MSB)
I/O mode
B0 B1 B2 B3 A0 A1 A2 A3
Comment
· Control data input mode, also referred to as “serial data input” mode.
1
IN1 (6A)
0 1 0 1 0 1 1 0 _{· This is a 16-bit data input mode.}
· Control data input mode, also referred to as “serial data input” mode.
2
IN2 (6B)
1 1 0 1 0 1 1 0 _{· This is a 16-bit data input mode.}
· Data output mode, also referred to as “serial data output” mode.
3
OUT (6C) 0 0 1 1 0 1 1 0 _{· The data for multiple blocks can be output sequentially in this mode.}
I/O mode determined
CE
1
CL
2
DI
B0 B1 B2 B3 A0 A1 A2
A3
1
DO
2
➀ For the CL normal high state
➁ For the CL normal low state
First Data IN1/2
First Data OUT
First Data OUT
A13212
Serial data input (IN1, IN2) t_SU, t_HD, t_EL, t_ES, t_EH ≥ 0.75 μs t_LC < 1.15μs t_CE < 20 ms
CL: Normal high
CE
CL
DI
Internal data
tEL
tES
tCE
tEH
tSU
tHD
B0 B1 B2 B3 A0 A1 A2
A3
FS0 FS1 FS2 FS3
CT1 0
0
0
EC3 EC4 CT0 0
TS0 TS1 TS2 TS3
tLC
A13213
CL: Normal low
tEL
tES
tCE
tEH
CE
CL
tSU
tHD
DI
B0 B1 B2 B3 A0 A1 A2 A3
FS0
CT1
FS1 FS2 FS3
0
0
0
Internal data
EC3 EC4 CT0 0
TS0 TS1 TS2 TS3
tLC
A13214
No. 6488-11/14