Sony ICD-BM1 Service Manual page 22

ICD-BM1/BM1A/BM1AVTP/BM1B/BM1DR9
• IC Pin Descriptions
IC601 µPD77213F1-101-DA2 (DSP) (MAIN BOARD)
Pin No. Pin Name
1 to 3 NC
4 EVDD
5 XADACS
6 ADACCLK
7 ADACDTI
8 ADACDTO
9 MICPWR
10 GND
11 XFMWP
12 XFMCS
13 MICSENSE
14 GND
15 NC
16 EVDD
17 HD1
18 HD2
19 HD0
20 HD3
21 HD5
22 HD4
23 GND
24 IVDD
25 HD7
26 HD6
27 GND
28 EVDD
29 XHCS
30 HA1
31 XHWR
32 HA0
33 XHRD
34 TIMOUT
35 SO
36 XHWE
37 XHRE
38 GND
39 EVDD
40 BCLK
41 to 44 NC
45 ADASI
46 MCLK
47 LRCLK
48 TSO
49 TSCK
50 TSOEN
51 GND
52 TSI
53 TSIAK
54 TSORQ
22
I/O
— Not used
— I/O power supply (3.0 V)
O AD/DA chip select
I/O AD/DA clock
I AD/DA data input
O AD/DA data output
O Microphone power supply control
— GND
O Boot flash ROM write protect
O Boot flash ROM chip select
O Microphone sensitivity select (H: Conference, L: Dictation)
— GND
— Not used
— I/O power supply (3.0 V)
I/O Host data bus (Not used)
I/O Host data bus (Not used)
I/O Host data bus (Not used)
I/O Host data bus (Not used)
I/O Host data bus (Not used)
I/O Host data bus (Not used)
— GND
— Core power supply (1.5 V)
I/O Host data bus (Not used)
I/O Host data bus (Not used)
— GND
— I/O power supply (3.0 V)
I Host chip select (Pull-up)
I Host data access 1 (Pull-down)
I Host write (Pull-up)
I Host data access 0 (Pull-down)
I Host read (Pull-up)
O Not used
O Serial data output
O Host write enable (Not used)
O Host read enable (Not used)
— GND
— I/O power supply (3.0 V)
I/O Bit clock
— Not used
I ADA serial data input
I Master clock
I/O Clock for L-ch and R-ch (H: L-ch, L: R-ch)
O Time sharing serial data output
I Time sharing serial clock input
I Time sharing serial input enable
— GND
I Time sharing serial data input
I Time sharing serial input response (Not used)
O Time sharing serial output request (Not used)
Pin Description