psb21391 Infineon Technologies Corporation, psb21391 Datasheet - Page 202
psb21391
Manufacturer Part Number
psb21391
Description
Siemens Codec With Upn Transceiver
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PSB21391.pdf
(253 pages)
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Data Sheet
7.1.9
Value after reset: 7F
MASK
For the MASK register following logical states are applied:
0: Interrupt is not masked
1: Interrupt is masked
Each interrupt source in the ISTA register can be selectively masked by setting to ’1’ the
corresponding bit in MASK. Masked interrupt status bits are not indicated when ISTA is
read. Instead, they remain internally stored and pending, until the mask bit is reset to ’0’.
Note: In the event of a C/I channel change, CIC is set in ISTA even if the corresponding
7.1.10
Value after reset: 00
MODE1
MCLK
The Master Clock Frequency bits control the microcontroller clock output corresponding
following table.
Bit 7 Bit 6 MCLK frequency
0
0
1
1
mask bit in MASK is active, but no interrupt is generated.
0
1
0
1
MASK - Mask Register
MODE1 - Mode1 Register
7
7
MODE1.CDS = ’0’
0
MCLK
... Master Clock Frequency
3.84 MHz
0.96 MHz
7.68 MHz
disabled
with
H
H
ST
CDS WTC1 WTC2
CIC
MODE1.CDS = ’1’
MCLK frequency
TIN
15.36 MHz
7.68 MHz
1.92 MHz
disabled
with
192
WOV TRAN MOS HDLC
CFS
Detalled Register Description
RSS2 RSS1 RD/WR (3D
0
0
PSB 21391
PSB 21393
2001-03-07
WR (3C
H
H
)
)
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