![](http://datasheet.mmic.net.cn/260000/PT7D6555_datasheet_15959090/PT7D6555_37.png)
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Preliminary Data Sheet
PT7D6555
Extended PCM Interface Controller
37
PT0105(08/02)
Ver:0
Synchronous Transfer Registers
Synchronous Transfer Data Register A (STDA) Address: 06H(0/3H) Read/Write
Value after reset: XXXXXXXXB
7 0
MTDA7 MTDA6 MTDA5 MTDA4 MTDA3 MTDA2 MTDA1 MTDA0
The STDA register buffers the data transferred over the synchronous transfer channel A. MTDA7 to MTDA0 hold the bits 7 to 0
of the respective time slot. MTDA7 (MSB) is the bit transmitted/received first, MTDA0 (LSB) the bit transmitted/received last
over the serial interface.
Synchronous Transfer Data Register B (STDB) Address: 08H/(0/4H) Read/Write
Value after reset: XXXXXXXXB
7 0
MTDB7 MTDB6 MTDB5 MTDB4 MTDB3 MTDB2 MTDB1 MTDB0
The STDB register buffers the data transferred over the synchronous transfer channel B. MTDB7 to MTDB0 hold the bits 7 to
0 of the respective time slot. MTDB7 (MSB) is the bit transmitted/received first, MTDB0 (LSB) the bit transmitted/received last
over the serial interface.
Synchronous Transfer Receive Address Register A (SARA) Address: 0AH(0/5H) Read/Write
Value after reset: XXXXXXXXB
7 0
ISRA
MTRA6 MTRA5 MTRA4 MTRA3 MTRA2 MTRA1 MTRA0
The SARA register specifies for synchronous transfer channel A from which input interface, port and time slot the serial data is
extracted. This data can then be read from the STDA register.
ISRA
Interface Select Receive for channel A.
0
…
selects the PCM interface as the input interface for synchronous channel A.
1
…
selects the CFI interface as the input interface for synchronous channel A.
MTRA6..0
μ
P Transfer Receive Address for channel A; selects the port and time slot number at the interface selected by
ISRA according to tables 4 and 5: MTRA6..0 = MA6... 0.
Synchronous Transfer Receive Address Register B (SARB) Address: 0CH(0/6H) Read/Write
Value after Reset: XXXXXXXXB
7 0
ISRB
MTRB6 MTRB5 MTRB4 MTRB3 MTRB2 MTRB1 MTRB0
The SARB register specifies for synchronous transfer channel B from which input interface, port and time slot the serial data is
extracted. This data can then be read from the STDB register.
ISRB
Interface Select Receive for channel B.
0
…
selects the PCM interface as the input interface for synchronous channel B.
1
…
selects the CFI-interface as the input interface for synchronous channel B.
MTRB6..0
μ
P-Transfer Receive Address for channel B;
selects the port and time slot number at the interface selected by
ISRB according to tables 3 and 4:
MTRB6..0 = MA6..0.