參數(shù)資料
型號(hào)： SAA7348GP
廠(chǎng)商： NXP SEMICONDUCTORS
元件分類(lèi)： 微控制器/微處理器
英文描述： All Compact Disc Engine ACE
中文描述： 8-BIT, MROM, 35 MHz, MICROCONTROLLER, PQFP100
文件頁(yè)數(shù)： 33/60頁(yè)
文件大?。?/td> 205K
代理商： SAA7348GP
1997 Jul 11
33
Philips Semiconductors
Preliminary specification
All Compact Disc Engine (ACE)
SAA7348GP
8.1.11
C
ONFIGURATION
C
ONTROL
R
EGISTER
(CCR)
The Config_cntrl register is used to control internal multiplexers. Note that the motor output configuration register in the
decoder is used to choose between the decoder motor control and the QCLV motor control. The register is byte
addressable; R/W.
Table 26
Description of CCR bits (address 0XFEH)
Note
1.
Note that the function of bit positions 1, 2, 3, 4 and 5 depends on whether the register is being written to or read from.
BIT
POSITION
(1)
SYMBOL
FUNCTION
READ
WRITE
7
6
7
6
Config_cntrl.7
Cnf_dac_clk_sel
not used
selects clock to DAC; Cnf_dac_clk_sel = 1:
;
Cnf_dac_clk_sel = 0:
5
1
Cnf_AGC_bypass
AGC decoder bypass; Cnf_AGC_bypass = 1: bypass; Cnf_AGC_bypass = 0:
use AGC
Lock_over_rule; Cnf_lock_over = 1: overrules the decoder signals force_lock,
force_flock
selects OTD input; Cnf_uPotd = 1: controller; Cnf_uPotd = 0: DSICS
selects PWM output mode; Cnf_sign_mag = 1: sign magnitude;
Cnf_sign_mag = 0: two’s complement
selects the filter in the QCLV motor control; Cnf_filter = 1: enable;
Cnf_filter = 0: disable
selects decoder communication mode; Cnf_dircom = 1: direct;
Cnf_dircom = 0: indirect (via the servo)
4
5
Cnf_lock_over
3
2
4
3
Cnf_uPotd
Cnf_sign_mag
1
2
Cnf_filter
0
0
Cnf_dircom
mast2
3
master clock
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