參數(shù)資料
型號: SAA4979H
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: Sample rate converter with embedded high quality dynamic noise reduction and expansion port
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP128
封裝: 28 X 28 X 3.40 MM, PLASTIC, QFP-128
文件頁數(shù): 30/52頁
文件大小: 224K
代理商: SAA4979H
2002 May 28
30
Philips Semiconductors
Product specification
Sample rate converter with embedded high quality
dynamic noise reduction and expansion port
SAA4979H
Table 9
Read register at 2f
H
8.2
Special Function Registers (SFRs)
Table 10
SNERT-bus control
HOST
ADDRESS
(HEX)
BIT
NAME
DESCRIPTION
Host address 0242H (system control)
0242
0 to 3
4
dspflds
dsp_unlock
number of display fields
1
display unlock: 0 = normal operation, 1 = vertical display timing
unlocked
reserved
5 to 7
Host address 02C8H (UV bandwidth detection)
02C8
0 to 7
UV_bw_detect
result of UV bandwidth detection (unsigned value)
Host address 02D0H (dynamic peaking)
02D0
0 to 7
steepness_max
result of steepness detection (unsigned value)
SFR
ADDRESS
(HEX)
BIT
READ/WRITE
NAME
DESCRIPTION
Special function register 9AH (SNCON); reset value: 00H
9A
0
read
TRM
SNERT transmit busy flag: TRM is set to logic 1 after SFR 9CH
(SNWDA) is accessed, after a transmission TRM is set to logic 0
SNERT receive busy flag: if REC is set to logic 1 the contents of
SFR 9BH (SNADD) is transmitted, after reception is completed
REC is set to logic 0
reserved
SNERT baud rate: 0 = 1 MHz, 1 = 2 MHz
1
read and write
REC
2 to 6
7
read and write
MB2
Special function register 9BH (SNADD)
9B
0 to 7
write
SNADD
SNERT address
Special function register 9CH (SNWDA)
9C
0 to 7
write
SNWDA
SNERT data to be transmitted
Special function register 9DH (SNRDA)
9D
0 to 7
read
SNRDA
data received from SNERT-bus
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