psf21911 ETC-unknow, psf21911 Datasheet - Page 14

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

Semiconductor Group
Pin No.
P-LCC-44 T-QFP64
24
25
33
35
43
44
55
58
Symbol
Stand-
alone
GNDd
GNDd
MS0
MS1
µP
mode
A0
SMODE I
D7
AD7
not used I
not used I
A3
not used
not used I
A2
CDOUT O
I/O
I
I
I
I/O
I/O
I
I
I
I
14
Function
GNDd
Must be connected to GNDd in stand-
alone mode.
Address Bus Pin
(Demultiplexed mode)
Serial Mode Pin: SMODE = 1 selects
serial mode, SMODE = 0 enables the
multiplexed mode.
GNDd
Must be connected to GNDd in stand-
alone mode.
Data Bus Pin
(Demultiplexed modes)
Address Data Bus Pin
(Multiplexed mode)
Mode Selection 0
refer to table 2 on page 26.
Address Bus Pin
(Demultiplexed modes).
Mode Selection 1
refer to table 2 on page 26.
Address Bus Pin
(Demultiplexed modes).
Controller Data Out
CCLK determines the data rate.
CDOUT is "high Z" if no data is
transmitted.
(Serial mode) tie to GND.
(Multiplexed mode) tie to GND.
(Serial mode) tie to GND.
(Multiplexed mode) tie to GND.
Pin Definitions and Functions
PSB 21911
PSF 21911
11.97