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参数资料
| 型号： | CS7666-KQ |
| 厂商： | CRYSTAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | DIGITAL COLOR-SPACE PROCESSOR FOR CCD CAMERAS |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | TQFP-64 |
| 文件页数： | 20/42页 |
| 文件大小： | 676K |
| 代理商： | CS7666-KQ |
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CS7666
20
DS302PP1
SAA8574 and a CS495X series part are present, the
CS495X series part I/O port value will be used. A
set of shunts or DIP switches attached to the I/O
port provides a convenient way to select up to 8
configurations. The SKIP command is executed by
writing a 1 to bit 1 of the EEPROM Control register
(42h).
The JUMP is similar to the SKIP command. The
user loads a jump address into the Jump Control
registers (40h and 41h) and then executes the
JUMP command by setting bit 2 of the EEPROM
Control register (42h) to a 1. The jump command
may be used to reduce the amount of required EE-
PROM space by allowing multiple configurations
to share common data. For example, three configu-
rations may be necessary to adjust for three differ-
ent CCD timings, but they may all share a common
gamma table.
The HALT command is used to stop the execution
of the boot state machine. When all necessary data
has been read from the EEPROM, writing a 1 to bit
0 (HALT) of the EEPROM Control register will
safely stop the boot process.
The total number of packets that may be stored in
the external EEPROM is 2k/3 or 682 3-byte com-
mands. Gamma table packets contain 259bytes.
A typical map of the EPROM table is shown in Fig-
ure 8. The only exception to this organization is
data for the CS7666 gamma table. The data for the
gamma table is organized as shown in Figure 9.
Reserved Registers and Test Pins
To ensure proper operation of the CS7666, connect
SCANMODE
(pin 53)
(pin 64) to ground, and connect TESTPINB
(pin 60) and TRANSP (pin 61) to VDD. Registers
23h - 26h must be set to a value of FFh after reset.
All other reserved registers may be left in their de-
fault states.
and
SCANENABLE
CS7666 station address[7] +W
1Ah (addrs of low byte Count)
count value
CS7666 station address[7] +W
1Bh (addrs of high byte Count)
count value
Dest. station address + W
Dest. device address
data value
Dest. station address + W
EPROM Block 000 (binary)
Address 00h
Figure 8. Map of EPROM table for initialization
of registers
CS7666 station address[7] +W
0Ch (gamma reg. addrs)
data = select RGB ram
data [gamma loc 00h]
data [gamma loc 01h]
data [gamma loc FFh]
Figure 9. Map of EPROM table for storing gamma
ram initialization data.
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